Berg, T.I.J. van den

work ability health ability worker study factor productivity loss productivity retirement association sickness absence work ability index environ demand work demands lifestyle employment absence sickness occup job control control determinant activity effect characteristic result population work-related factors work-related disease chapter measure index group lifestyle factors model subject analysis review obesity occup environ med score table follow-up influence life events condition mirna problem sqstm change study population dimension focus group interviews disability health problems participation scand ratio status education event intervention smoking burdorf sqstm 1 body mass index increase unemployment country employee labour duration work characteristics focus limitation research regression level