Background. Little is known about the prevalence of PTSD in primary-care settings and regarding the ability of primary-care physicians to detect PTSD. The current study examines prevalence of PTSD in a national sample of primary-care attenders and primary-care physicians' detection of PTSD and general psychological distress in PTSD patients.

Methods. Data are from a national study of 2975 primary-care attenders in Israel. Demographic data, responses to the GHQ-28, PTSD Inventory and physicians' diagnoses were examined.

Results. Twenty-three per cent of all patients who attended clinics (N=684) reported traumatic events, 39% of whom (males 37%, females 40%) met criteria for PTSD on the PTSD Inventory. Eighty per cent of the males and 92% of the females with PTSD were distressed according to the GHQ. According to physicians, 37% of persons who reported trauma (40% of the women, 32% of the men) suffered from psychological distress. Only 2% of patients meeting PTSD criteria on the self-report measure were given a diagnoses of PTSD by physicians.

Conclusions. Many primary-care patients suffer from PTSD, which is usually accompanied by major psychological distress. Attention by primary-care physicians to a history of trauma could improve physicians' detection of this disabling disorder.

Background. The Interacting Cognitive Subsystems analysis of cognitive vulnerability to depression predicts that subjective experiences of dysphoria in recovered depressed patients will be qualitatively different from those of controls. This study tested this prediction using a new instrument, the Depressed States Checklist.

Methods. Twenty-three recovered recurrently depressed patients and 54 never depressed controls rated the affective and self-devaluative components of a dysphoric experience.

Results. Groups reported similar levels of affective component but recovered depressed patients reported higher self-devaluative dysphoric experience. At zero affective component of dysphoria neither group reported any self-devaluative feelings. With increasing affective component of dysphoria, the self-devaluative component increased significantly more in recovered patients than in controls. The ratio of self-devaluative to affective components of dysphoria significantly differentiated recovered depressed patients from controls.

Conclusions. As predicted, dysphoria in recovered depressed patients is qualitatively different from controls in ways that increase vulnerability to major depression. The Depressed States Checklist is a new, brief, measure of cognitive vulnerability to depression that may be particularly useful in large, prospective, epidemiological studies.

Background. Self-asphyxiation using car exhaust gas is a common method of suicide in England and Wales, particularly in young males. The introduction of catalytic converters has reduced the toxicity of car exhausts. The main aims of the study were: to seek evidence of a fall in car exhaust suicides in the general population and in age and gender groups; to relate any fall to changes in car exhaust systems, particularly since legislation on car exhaust emissions in 1993; and to examine rates of suicide by other methods for evidence of method substitution.

Methods. Population study in England and Wales using national suicide statistics for 1987 to 1998.

Results. There was a fall in suicide by car exhaust asphyxiation in all age and gender groups. This change was most marked after 1993. The overall population suicide rate (all methods) also fell but there was no overall change in suicides by young males or females. In these groups suicide by hanging increased.

Conclusions. Legislation on catalytic converters appears to have contributed to a fall in car exhaust suicides. However, the effect on overall suicide rates in young people has been reduced by method substitution.