There were errors in Table 2 in the paper by Richards et al. (Reference Richards2008) for which the authors apologize. The data for the three secondary outcome measures at post-treatment were incorrectly reported using the same figures as those reported for the baseline measures in Table 1. The primary outcomes were reported correctly.

The correct version of Table 2 is given below.

Table 2. Follow-up scores, coefficients of difference between intervention and patient-randomized control group with cluster controls, 95% CI and p values of the difference

PHQ-9, Patient Health Questionnaire-9; CORE-OM, Clinical Outcomes in Routine Evaluation – Outcome Measure; SF-36 MCS, Short Form Health Survey mental component score; SF-36 PCS, Short Form Health Survey physical component score.