PT  - JOURNAL ARTICLE
AU  - P Smith
AU  - D Beaton
TI  - Measuring change in psychosocial working conditions: methodological issues to consider when data are collected at baseline and one follow-up time point
AID  - 10.1136/oem.2006.032144
DP  - 2008 Apr 01
TA  - Occupational and Environmental Medicine
PG  - 288--296
VI  - 65
IP  - 4
4099  - http://oem.bmj.com/content/65/4/288.short
4100  - http://oem.bmj.com/content/65/4/288.full
SO  - Occup Environ Med2008 Apr 01; 65
AB  - If policy makers and employers are to take health issues into account when making decisions that will impact on work practices and work environments, they will need accurate information concerning the impact change in psychosocial working conditions has on health status. Although research is increasing in this area, a variety of different methods have been used to define when change in work conditions has occurred. The present paper considers various issues related to the accurate assessment of change in psychosocial working conditions, focusing on research designs that involve the collection of data at baseline and a single follow-up time point. The aim is to inform investigators about these methodological issues so they can be considered in the design of studies, the analysis of data and the interpretation of research findings.