Psychosocial factors
Descriptive statistics showed an increasing trend in ODI ratings
for PSS, physical and psychological demands. A decreasing trend
was seen with an increase in decision latitude, social support and
organizational level (Table 8). Stepwise linear regression of the
psychosocial factors resulted in a model with an adjusted R2 of 0.36
(Table 9). Perceived stress, physical demands and organizational
level, and the interaction terms, PSS by organizational level and
physical demands by organizational level made it into the model.
Out of these, PSS explained 25% of the variance. The interaction
terms explained 7 and 9%.