Globally, grandparents are the main informal childcare providers with one-quarter of children aged ≤5 years regularly cared for by grandparents in Australia, the UK and USA. Research is conflicting; many studies claim grandparents provide excessive amounts of discretionary foods (e.g. high in fat/sugar/sodium) while others suggest grandparents can positively influence children’s diet behaviours. The present study aimed to explore the meaning and role of food treats among grandparents who provide regular informal care of young grandchildren.

Qualitative methodology utilising a grounded theory approach. Data were collected using semi-structured interviews and focus groups, then thematically analysed.

Participants were recruited through libraries, churches and playgroups in South Australia.

Grandparents (n 12) caring for grandchild/ren aged 1–5 years for 10 h/week or more.

Three themes emerged: (i) the functional role of treats (e.g. to reward good behaviour); (ii) grandparent role, responsibility and identity (e.g. the belief that grandparent and parent roles differ); and (iii) the rules regarding food treats (e.g. negotiating differences between own and parental rules). Grandparents favoured core-food over discretionary-food treats. They considered the risks (e.g. dental caries) and rewards (e.g. pleasure) of food treats and balanced their wishes with those of their grandchildren and parents.

Food treats play an important role in the grandparent–grandchild relationship and are used judiciously by grandparents to differentiate their identity and relationship from parents and other family members. This research offers an alternative narrative to the dominant discourse regarding grandparents spoiling grandchildren with excessive amounts of discretionary foods.

Obesity and hyperglycaemia contribute to the atherosclerotic process in part through oxidative modifications to lipoprotein particles. The present study aimed to evaluate the effects of a lifestyle intervention on markers of oxidized lipoproteins in obese Latino adolescents with prediabetes.

Pre–post design.

Participants were enrolled into a 12-week lifestyle intervention. Measurements pre- and post-intervention included anthropometrics and body composition, lipid panel, oxidized LDL (oxLDL), oxidized HDL (oxHDL), intake of fresh fruits and vegetables, and cardiorespiratory fitness.

Thirty-five obese Latino adolescents (seventeen females, eighteen males; mean age 15·5 (sd 1·0) years; mean BMI percentile 98·5 (sd 1·2)) with prediabetes.

Intervention participation resulted in significant reductions in weight (−1·2 %, P = 0·042), BMI and BMI percentile (−2·0 and −0·4 %, respectively, P < 0·001), body fat (−7·0 %, P = 0·025), TAG (−11·8 %, P = 0·032), total cholesterol (−5·0 %, P = 0·002), VLDL-cholesterol (−12·5 %, P = 0·029), and non-HDL-cholesterol (−6·7 %, P = 0·007). Additionally, fitness (6·4 %, P < 0·001) and intake of fruits and vegetables (42·4 %, P = 0·025) increased significantly. OxLDL decreased significantly after the intervention (51·0 (sd 14·0) v. 48·7 (sd 12·8) U/l, P = 0·022), while oxHDL trended towards a significant increase (395·2 (sd 94·6) v. 416·1 (sd 98·4) ng/ml, P = 0·056).

These data support the utility of lifestyle intervention to improve the atherogenic phenotype of Latino adolescents who are at high risk for developing premature CVD and type 2 diabetes.

To simulate impact of Ca supplementation on estimated total Ca intakes among women in a population with low dietary Ca intakes, using WHO recommendations: 1·5–2·0 g elemental Ca/d during pregnancy to prevent pre-eclampsia.

Single cross-sectional 24 h dietary recall data were adjusted using IMAPP software to simulate proportions of women who would meet or exceed the Estimated Average Requirement (EAR) and Tolerable Upper Intake Level (UL) assuming full or partial adherence to WHO guidelines.

Nationally and regionally representative data, Ethiopia’s ‘lean’ season 2011.

Women 15–45 years (n 7908, of whom 492 pregnant).

National mean usual Ca intake was 501 (sd 244) mg/d. Approximately 89, 91 and 96 % of all women, pregnant women and 15–18 years, respectively, had dietary Ca intakes below the EAR. Simulating 100 % adherence to 1·0, 1·5 and 2·0 g/d estimated nearly all women (>99 %) would meet the EAR, regardless of dosage. Nationally, supplementation with 1·5 and 2·0 g/d would result in intake exceeding the UL in 3·7 and 43·2 % of women, respectively, while at 1·0 g/d those exceeding the UL would be <1 % (0·74 %) except in one region (4·95 %).

Most Ethiopian women consume insufficient Ca, increasing risk of pre-eclampsia. Providing Ca supplements of 1·5–2·0 g/d could result in high proportions of women exceeding the UL, while universal consumption of 1·0 g/d would meet requirements with minimal risk of excess. Appropriately tested screening tools could identify and reduce risk to high Ca consumers. Research on minimum effective Ca supplementation to prevent pre-eclampsia is also needed to determine whether lower doses could be recommended.

To examine timing of eating across ten European countries.

Cross-sectional analysis of the European Prospective Investigation into Cancer and Nutrition (EPIC) calibration study using standardized 24 h diet recalls collected during 1995–2000. Eleven predefined food consumption occasions were assessed during the recall interview. We present time of consumption of meals and snacks as well as the later:earlier energy intake ratio, with earlier and later intakes defined as 06.00–14.00 and 15.00–24.00 hours, respectively. Type III tests were used to examine associations of sociodemographic, lifestyle and health variables with timing of energy intake.

Ten Western European countries.

In total, 22 985 women and 13 035 men aged 35–74 years (n 36 020).

A south–north gradient was observed for timing of eating, with later consumption of meals and snacks in Mediterranean countries compared with Central and Northern European countries. However, the energy load was reversed, with the later:earlier energy intake ratio ranging from 0·68 (France) to 1·39 (Norway) among women, and from 0·71 (Greece) to 1·35 (the Netherlands) among men. Among women, country, age, education, marital status, smoking, day of recall and season were all independently associated with timing of energy intake (all P<0·05). Among men, the corresponding variables were country, age, education, smoking, physical activity, BMI and day of recall (all P<0·05).

We found pronounced differences in timing of eating across Europe, with later meal timetables but greater energy load earlier during the day in Mediterranean countries compared with Central and Northern European countries.

While scholarship has investigated how to provide more healthy food options in choice pantry environments, research has just begun to investigate how pantry users go about making decisions regarding food items when the ability to choose is present. The present analysis sought to investigate the factors prohibiting and inhibiting food decision making in choice pantries from the perspective of frequent pantry users.

Six focus group interviews were conducted with visitors to choice food pantries, to discuss the decision-making process involved in food selection during choice pantry visits. Each was provided a $US 15 remuneration for taking part.

A school-based choice food pantry in Anderson, Indiana, USA, a small Midwestern community.

Thirty-one men and women, largely aged 45–64 years, who made use of choice food pantries at least once monthly to meet their family’s food needs.

Choice pantry visitors indicated that the motivation to select healthy food items was impacted by both individual and situational influences, similar to retail environments. Just as moment-of-purchase and place-of-purchase factors influence the purchasing of food items in retail environments, situational factors, such as food availability and the ‘price’ of food items in point values, impacted healthy food selection at choice pantries. However, the stigmatization experienced by those who visit pantries differs quite dramatically from the standard shopping experience.

Choice pantries would benefit from learning more about the psychosocial factors in their own pantries and adapting the environment to the desires of their users, rather than adopting widely disseminated strategies that encourage healthy food choices with little consideration of their unique clientele.

To assess the prevalence of nutritional risk among an ethnically diverse group of urban community-dwelling older adults and to explore if risk varied by race/ethnicity.

Demographic characteristics, Katz’s activities of daily living and health-care resource utilization were ascertained cross-sectionally via telephone surveys with trained interviewers. Nutrition risk and nutrition symptomology were assessed via the abridged Patient Generated Subjective Global Assessment (abPG-SGA); scores of ≥6 points delineated ‘high’ nutrition risk. Descriptive statistics and logistic regression analyses were conducted.

Urban.

White, Black or Hispanic community-dwelling adults, ≥55 years of age, fluent in English or Spanish, residing in the city limits of Chicago, IL, USA.

A total of 1001 participants (37 % white, 37 % Black, 26 % Hispanic) were surveyed. On average, participants were 66·9 years old, predominantly female and overweight/obese. Twenty-six per cent (n 263) of participants were classified as ‘high’ nutrition risk with 24, 14 and 31 % endorsing decreased oral intake, weight loss and compromised functioning, respectively. Black respondents constituted the greatest proportion of those with high risk scores, yet Hispanic participants displayed the most concerning nutrition risk profiles. Younger age, female sex, Black or Hispanic race/ethnicity, emergency room visits, eating alone and taking three or more different prescribed or over-the-counter drugs daily were significantly associated with high risk scores (P<0·05).

One in four older adults living in an urban community prone to health disparities was classified as ‘high’ nutrition risk. Targeted interventions to promote healthy ageing are needed, especially for overweight/obese and minority community members.

To evaluate the impact of message framing on attitudes towards messages aimed at promoting the use of nutritional warnings, behavioural intention and actual behaviour, evaluated through visual attention to nutritional warnings and the choice of a snack product during a real choice task.

Following a between-subjects design, participants were exposed to loss-framed nutrition messages, gain-framed nutrition messages or non-nutrition-related messages (control group). After evaluating the messages, participants were asked to select a snack product as a compensation for their participation. The experiment was conducted using an eye tracker.

Montevideo (Uruguay).

Convenience sample of 201 people (18–51 years old, 58 % female).

The average percentage of participants who fixated their gaze on the nutritional warnings during the choice task was slightly but significantly higher for participants who attended to nutrition messages (regardless of their framing) compared with the control group. Participants who attended to loss-framed messages fixated their gaze on the warnings for the longest period of time. In addition, the healthfulness of the snack choices was higher for participants exposed to nutrition-related messages compared with the control group.

Results from the present work suggest that nutrition messages aimed at increasing awareness of nutritional warnings may increase consumers’ visual attention and encourage more heathful choices. The framing of the messages only had a minor effect on their efficacy.

The present study aimed to examine the key influences on infant and child feeding practices among a Marshallese community at each social ecological level. It is the first study to examine the key influences on infant and child feeding practices with Marshallese immigrant women in the USA and helps fill a gap in the previous literature that has included other immigrant women.

Community-based participatory research design with twenty-seven participants taking part in four qualitative focus groups.

The study took place within the Marshallese community in Arkansas, USA.

Participants included Marshallese women with children aged 1–3 years and/or caregivers. Caregivers were defined as someone other than the parent who cares for children. Caregivers were often older women in the Marshallese community.

There were five primary themes within multiple levels of the Social Ecological Model. At the intrapersonal level, mothers’ and caregivers’ autonomy emerged. At the interpersonal level, child-led and familial influences emerged. At the organizational level, health-care provider influences emerged; and at the policy level, the Special Supplemental Nutrition Program for Women, Infants, and Children emerged as the most salient influence.

Marshallese immigrant women’s infant and child feeding practices are influenced at intrapersonal, interpersonal, organizational and policy levels. Understanding these multidimensional influences is necessary to inform the creation of culturally tailored interventions to reduce health disparities within the Marshallese community.

The present study examines characteristics of those who benefited from a dietary Fe intervention comprised of salt double-fortified with iodine and Fe (DFS).

Data from a randomized controlled trial were analysed to identify predictors of improved Fe status and resolution of Fe deficiency (serum ferritin (sFt) < 12 μg/l) and low body Fe (body Fe (BI) < 0·0 mg/kg) using non-parametric estimations and binomial regression models.

A tea estate in West Bengal, India.

Female tea pluckers, aged 18–55 years.

Consuming DFS significantly (P = 0·01) predicted resolution of Fe deficiency (relative risk (RR) = 2·31) and of low BI (RR = 2·78) compared with consuming iodized salt. Baseline sFt (β = –0·32 (se 0·03), P < 0·001) and treatment group (β = 0·13 (se 0·03), P < 0·001) significantly predicted change in sFt. The interaction of baseline BI with treatment group (β = –0·11 (se 0·06), P = 0·08) predicted the change in BI. DFS did not significantly predict change in Hb and marginally predicted resolution of anaemia (Hb < 120 g/l).

Baseline Fe status, as assessed by sFt and BI, and consumption of DFS predict change in Fe status and resolution of Fe deficiency and low BI. Anaemia prevalence and Hb level, although simple and inexpensive to measure, may not be adequate to predict resolution of Fe deficiency in response to an intervention of DFS in similar populations with high prevalence of Fe deficiency and multiple nutritional causes of anaemia. These findings will guide appropriate targeting of future interventions.

We aimed to determine nutritional status and related factors among schoolchildren in Çorum, Central Anatolia, Turkey.

Schoolchildren’s height and weight were measured to calculate BMI and BMI Z-scores. Height, weight and BMI Z-scores were analysed and nutritional status classified according to the WHO.

Central Anatolia, Turkey.

Schoolchildren aged 5–17 years (n 1684) participated in study.

Of children, 4·2% were stunted, 6·9% thin, 13·8% overweight and 6·6% were obese. Proportions of stunting, thinness and overweight/obesity were significantly higher in children aged >10 years (78·6, 75·0 and 64·9%, respectively) than in those aged ≤10 years (21·4, 25·0 and 35·1%, respectively; all P <0·001). Median (range) birth weight and breast-feeding duration in children with stunting (2750 (1400–3600)g; 10 (0–36) months) were significantly lower and shorter, respectively, than those of normal height (3200 (750–5500)g; 15 (0–72) months) and tall children (3500 (2500–4900)g; 18 (0–36) months; P <0·001, <0·001, 0·011 and 0·016, respectively). The same relationship was observed in thin children (3000 (1000–4500)g; 12 (0–36) months) compared with normal-weight (3200 (750–5500)g; 15 (0–72) months) and overweight/obese children (3300 (1200–5500)g; 16 (0–48) months; P=0·026, <0·001, 0·045 and 0·011, respectively).

Overweight and obesity are health problems that must be addressed in schoolchildren. Adolescents also have a risk of double malnutrition. Promoting normal birth weight and encouraging long duration of breast-feeding are important to support normal growth in children.

To describe infant feeding practices and predictors of exclusive breast-feeding among women attending a local Special Supplemental Nutrition Program for Women, Infants, and Children (WIC) programme.

Cross-sectional survey. Outcomes included reported infant feeding practices at 3 and 6 months, timing and reasons for introduction of formula. Descriptive statistics, χ2 tests and logistic regression were used describe the sample and explore relationships between variables.

Loudoun County, VA, USA.

A sample of 190 predominantly Hispanic women attending local WIC clinics.

Overall, 84 % of women reported ever breast-feeding and 61 % of infants received formula in the first few days of life. Mothers who reported on infant feeding practices were less likely to exclusively breast-feed (34 v. 45 %) and more likely to provide mixed feeding (50 v. 20 %) at 3 months compared with 6 months, respectively. Significant (P<0·05) predictors of exclusive breast-feeding at 3 months included setting an exclusive breast-feeding goal and completing some high school (compared with completing high school or more). Only education remained a significant predictor of exclusive breast-feeding at 6 months.

A high proportion of women reported giving formula in the first few days of life and many changed from mixed to exclusive breast-feeding or formula by 6 months, suggesting possibly modifiable factors. Further investigation can help drive direct service- as well as policy and systems-based interventions to improve exclusive breast-feeding.

The current mixed-methods study explored qualitative accounts of prior childhood experiences and current contextual factors around family meals across three quantitatively informed categories of family meal frequency patterns from adolescence to parenthood: (i) ‘maintainers’ of family meals across generations; (ii) ‘starters’ of family meals in the next generation; and (iii) ‘inconsistent’ family meal patterns across generations.

Quantitative survey data collected as part of the first (1998–1999) and fourth (2015–2016) waves of the longitudinal Project EAT (Eating and Activity in Adolescents and Young Adults) study and qualitative interviews conducted with a subset (n 40) of Project EAT parent participants in 2016–2017.

Surveys were completed in school (Wave 1) and online (Wave 4); qualitative interviews were completed in-person or over the telephone.

Parents of children of pre-school age (n 40) who had also completed Project EAT surveys at Wave 1 and Wave 4.

Findings revealed salient variation within each overarching theme around family meal influences (‘early childhood experiences’, ‘influence of partner’, ‘household skills’ and ‘family priorities’) across the three intergenerational family meal patterns, in which ‘maintainers’ had numerous influences that supported the practice of family meals; ‘starters’ experienced some supports and some challenges; and ‘inconsistents’ experienced many barriers to making family meals a regular practice.

Family meal interventions should address differences in cooking and planning skills, aim to reach all adults in the home, and seek to help parents who did not eat family meals as a child develop an understanding of how and why they might start this tradition with their family.

To assess the feasibility and acceptability of a beverage intervention in Hispanic adults.

Eligible individuals identified as Hispanic, were 18–64 years old and had BMI 30·0–50·0 kg/m2. Participants were randomized 2:2:1 to one of three beverages: Mediterranean lemonade (ML), green tea (GT) or flavoured water control (FW). After a 2-week washout period, participants were asked to consume 32 oz (946 ml) of study beverage daily for 6 weeks and avoid other sources of tea, citrus, juice and sweetened beverages; water was permissible. Fasting blood samples were collected at baseline and 8 weeks to assess primary and secondary efficacy outcomes.

Tucson, AZ, USA.

Fifty-two participants were recruited over 6 months; fifty were randomized (twenty-one ML, nineteen GT, ten FW). Study population mean (sd) age 44·6 (sd 10·2) years, BMI 35·9 (4·6) kg/m2; 78 % female.

Forty-four (88 %) completed the 8-week assessment. Self-reported adherence was high. No significant change (95 % CI) in total cholesterol (mg/dl) from baseline was shown −1·7 (−14·2, 10·9), −3·9 (−17·2, 9·4) and −13·2 (−30·2, 3·8) for ML, GT and FW, respectively. Mean change in HDL-cholesterol (mg/dl) −2·3 (−5·3, 0·7; ML), −1·0 (−4·2, 2·2; GT), −3·9 (−8·0, 0·2; FW) and LDL-cholesterol (mg/dl) 0·2 (−11·3, 11·8; ML), 0·5 (−11·4, 12·4; GT), −9·8 (−25·0, 5·4; FW) were also non-significant. Fasting glucose (mg/dl) increased significantly by 5·2 (2·6, 7·9; ML) and 3·3 (0·58, 6·4; GT). No significant change in HbA1c was demonstrated. Due to the small sample size, potential confounders and effect modifiers were not investigated.

Recruitment and retention figures indicate that a larger-scale trial is feasible; however, favourable changes in cardiometabolic biomarkers were not demonstrated.

To investigate the prevalence of folic acid deficiency in Queensland-wide data of routine laboratory measurements, especially in high-risk sub-populations.

Secondary health data analysis.

Analysis of routine folic acid tests conducted by Pathology Queensland (AUSLAB).

Female and male persons aged 0–117 years with routine folic acid testing between 1 January 2004 and 31 December 2015. If repeat tests on the same person were conducted, only the initial test was analysed (n 291 908).

Overall the prevalence of folic acid deficiency declined from 7·5 % before (2004–2008) to 1·1 % after mandatory folic acid fortification (2010–2015; P < 0·001) reflecting a relative reduction of 85 %. Levels of erythrocyte folate increased significantly from a median (interquartile range) of 820 (580–1180) nmol/l in 2008 before fortification to 1020 (780–1350) nmol/l in 2010 (P < 0·001) after fortification. The prevalence of folic acid deficiency in the Indigenous population (14 792 samples) declined by 93 % (17·4 v. 1·3 %; P < 0·001); and by 84 % in non-Indigenous residents (7·0 v. 1·1 %; P < 0·001). In a logistic regression model the observed decrease of folic acid deficiency between 2008 and 2010 was found independent of gender, age and ethnicity (ORcrude = 0·20; 95 % CI 0·18, 0·23; P < 0·001; ORadjusted = 0·21; 95 % CI 0·18, 0·23; P < 0·001).

While voluntary folic acid fortification, introduced in 1995, failed especially in high-risk subgroups, the 2009 mandatory folic acid fortification programme coincided with a substantial decrease of folic acid deficiency in the entire population.

To determine whether children exposed to a greater variety of acts of parent-to-child physical and psychological maltreatment will be at greater risk of consuming obesogenic foods at a higher frequency.

Survey research using a longitudinal panel design.

In-home interviews with primary caregivers in twenty large US cities.

A national sample of at-risk children and their families who participated in the Fragile Families and Child Wellbeing Study (FFCWS).

Child maltreatment emerged as a statistically significant (P<0·01) and robust predictor of obesogenic food consumption, in both cross-sectional and longitudinal analyses. Child maltreatment also consistently emerged as one of the strongest predictors of obesogenic food consumption in these models. Ancillary analyses indicated that physical maltreatment plays a particularly important role in these associations.

A major implication of the present study is that child maltreatment prevention efforts should be reflected in interventions that seek to diminish unhealthy eating practices among children. Multi-professional teams can work together on obesity prevention not only via education but also by considering the interconnectedness of obesogenic food consumption and experiences of maltreatment.

To assess the short- and long-term effectiveness of a lottery incentive intervention to promote the purchase of healthy products in school cafeterias.

A quasi-experiment in which students’ purchases in intervention schools were analysed in a pre–post analysis and also compared with a control school in a difference-in-differences model. A hierarchical linear model assessed the mean number of promoted healthy products purchased daily per participant before (twenty-six weekdays), during (nine weekdays) and after (twenty-eight weekdays) the intervention period. Sex, age and prior purchasing behaviour served as covariates.

Convenience sample of school cafeterias using a debit-card payment method that allowed for the assessment of students’ purchasing behaviour.

Students who used the pre-paid card to buy snacks at the school cafeteria. A total of 352 students (208 in intervention schools and 144 in control school) were included in the final analyses.

The incentives programme significantly increased the purchase of promoted healthy products during (v. before) the intervention period in intervention schools (P<0·001), especially among younger children (P=0·036). Among the students who purchased the promoted healthier products during the intervention, there was an increase in total number of purchased products (healthy non-promoted, but also of less healthy products). Sex and past consumption behaviour did not influence the response to incentives in the short term. On average, no long-term effect was observed.

Long-term and negative spillover effects must be taken into consideration for a complete understanding of the effects of incentives on healthier eating.

To describe public health nurses’ (PHN) experiences of referring to, and families’ experiences of being referred to, a multicomponent, community-based, childhood weight management programme and to provide insight into families’ motivation to participate in and complete treatment.

Qualitative study using semi-structured interviews and the draw-and-write technique.

Two geographical regions in the south and west of Ireland.

Nine PHN involved in the referral process, as well as ten parents and nine children who were referred to and completed the programme, participated in the present study.

PHN were afraid of misclassifying children as obese and of approaching the subject of excess weight with parents. Peer support from other PHN as well as training in how best to talk about weight with parents were potential strategies suggested to alleviate these fears. Parents recalled the anxiety provoked by the ‘medical terminology’ used during referral and their difficulty interpreting what it meant for the health of their child. Despite initial fears, concern for their children’s future health was a major driver behind their participation. Children’s enjoyment, the social support experienced by parents as well as staff enthusiasm were key to programme completion.

The present study identifies the difficulties of referring families to community weight management programmes and provides practical suggestions on how to support practitioners in making referrals. It also identifies key positive factors influencing parents’ decisions to enrol in community weight management programmes. These should be maximised by staff and policy makers when developing similar programmes.

As part of a national initiative to reduce child obesity, a comprehensive school-based nutrition education intervention to change eating behaviours among grade 4 primary-school students was developed, implemented and evaluated.

The intervention was developed by school staff, with technical assistance from outside health education specialists. The programme included school facility upgrades, school teacher/staff training, curriculum changes and activities for parents. Student scores on nine key eating behaviours were assessed prior to and after the programme. The quality of programme implementation in the schools was monitored by technical assistance teams.

Shandong Province (high household income) and Qinghai Province (low household income), China. Three programme schools and three control schools in each province.

Students in grade 4 (age 8–9 years).

There were significant positive changes in self-reported eating behaviour scores from pre- to post-assessment in programme schools. At post-test students in programme schools had significantly higher scores than students in control schools after controlling for other variables. The programme was more effective in the high-income province. Observations by the technical assistance teams suggested the programme was implemented more completely in Shandong. The teams noted the challenges for implementing and evaluating programmes like these.

This intervention increased healthy eating behaviours among 4th graders in both provinces and had more effect in the more affluent province. Results suggest that a scaled-up initiative using existing school and public health resources could change eating practices in a large population over time. The intervention also provided lessons for implementing and evaluating similar nutrition programmes.

To evaluate agreement of the body adiposity index (BAI) and paediatric body adiposity index (BAIp) in estimating body fat compared with dual-energy X-ray absorptiometry (DXA) and to propose cut-off points for these indices to classify excess adiposity in Brazilian children and adolescents.

Cross-sectional study. Measures of weight, height, hip circumference, BMI and body fat percentage (%BF) assessed by DXA were taken, and BAI and BAIp were calculated. The Bland–Altman plot was used to estimate agreement between the methods, and the receiver-operating characteristic curve to determine the cut-off points for BAI and BAIp per age and sex in comparison with DXA.

Viçosa, Minas Gerais, Brazil.

Children and adolescents aged 8–19 years (n 1049).

Of the children and adolescents, 52·4 % were girls. BAI and BAIp had satisfactory performance by the receiver-operating characteristic curve, except for the 18–19 years age group, whose BAIp had better predictive capacity than BAI. The agreement analysis showed that BAI overestimated %BF by 2·64 %, on average, using DXA; while BAIp underestimated %BF by 3·37 %.

BAI and BAIp showed low agreement with the body fat obtained by DXA, requiring caution when interpreting body composition data in children and adolescents.