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Table 3 Summary of population, data collection, endpoints of studies included in review

From: Depression as a predictor of work resumption following myocardial infarction (MI): a review of recent research evidence

Authors Population Assessment points Depression measure Definition of Return to Work (RTW)
Bhattacharyya (2007) [14] N = 126 ACS patients 7-10 days after admission, 12 months BDI Patients were asked when they had started work again and whether they were working full time or part time.
Brink (2008) [30] N = 88 MI patients 4-6 months HADS Questionnaire about gainful employment, unemployment, early retirement, sick leave before and after MI
Fukuoka (2009) [28] N = 198 ACS patients During hospitalisation, 2 and 6 months after hospital admission BDI Questionnaire about work status and the date participants returned to work. RTW was defined as starting back at work for more than 20 hours/week.
Engblom (1994) [27] N = 102 CABS male patients Before CABG, 2 and 8 months after BDI Questionnaire, interview about work status (defined as paid employment, full or part time) and check of registry of Social Insurance Institution
Ladwig (1994) [34] N = 377 MI male patients 17-21 days after event, 6 months Validated 12-item version of depression composed of three subscales with rank-ordered ratings from
1 to 3
Patients were asked to complete a questionnaire about vocational and social status at the time of participation. 'Have you returned to work?'
Mayou (2000) [9] N = 344 MI patients 3 days after admission, 3 and 12 months HADS Insufficient
McGee (2006) [35] N = 363 ACS In hospital, 12 months BDI -FS, HADS-D Questionnaire about RTW (full or part time employment)
Mittag (2001) [33] N = 119 males post MI or CABG patients During hospitalisation, 12 months CES-D/ADS Depression Postal questionnaire, asking whether participants had resumed their occupations, if they were working in their former job or had changed to some other workplace, and if they were working full time or not.
Soderman (2003) [5] N = 198 CABG, PCTA patients "Start of program," end of four week residential stay, 12 months BDI RTW was measured in two different ways, (a) RTW at full-time (100% of earlier working hours), and (b) RTW at reduced working hours
Soejima (1999) [31] N = 111 married males AMI patients Average 24.8 days post admission (in hospital) Average 8 months Cornell Medical Index, 6 item depression index Three measures of RTW: whether participant had returned to work, interval in days between hospital discharge and resumption of work, and estimates of activity level at work compared with before MI
Sykes (2000) [32] N = 149 MI
Patients
Baseline was pre
discharge upon stabilising of condition and again at 12 months
Subscale of MMPI Employment status was defined as returned to work or not, with information collected on patient occupation, Social Economic Status and work strain
Samkange-Zeeb (2006) [29] N = 620 CHD patients Beginning of rehab, 6 and 12months post rehab HADS (adjusted for Germany) Current working situation and questionnaire on intention to RTW, disability and profession