Table 3

Associations between depressive symptoms and observed individual working conditions among 95 directly observed eldercare workers

	Model I*			Model II†			Model III‡			Individual deviation from work unit average§		Work unit average§
	Relative difference (%)	95% CI	p Value	Relative difference (%)	95% CI	p Value	Relative difference (%)	95% CI	p Value	Relative difference (%)	95% CI	Relative difference (%)	95% CI
Resources
Regulation requirements	−14	(−25% to −1%)	0.031	−16	(−28% to −1%)	0.032	−15	(−27% to −1%)	0.043	−19	(−34% to −2)	−7	(−28% to 19%)
Stressors
Extra work due to barriers (difference per 30 min)	−4	(−13% to 7%)	0.481	−2	(−12% to 10%)	0.764	−2	(−13% to 9%)	0.689	2	(−12% to 18%)	−6	(−20% to 10%)
Sum of qualitatively different barriers	−3	(−21% to 21%)	0.809	0	(−20% to 24%)	0.989	−1	(−20% to 23%)	0.933	−4	(−32% to 35%)	2	(−25% to 38%)
Barrier sub-scales
Locomotion, movement and resident handling	−9	(−35% to 27%)	0.565	−10	(−36% to 26%)	0.531	−11	(−37% to 25%)	0.488	6	(−30% to 61%)	−36	(−63% to 11%)
Information processing	1	(−16% to 21%)	0.896	4	(−14% to 25%)	0.694	4	(−14% to 25%)	0.692	−1	(−22% to 26%)	10	(−15% to 44%)
Equipment use	2	(−16% to 24%)	0.847	3	(−16% to 26%)	0.760	4	(−14% to 28%)	0.664	8	(−21% to 49%)	2	(−19% to 30%)
Interruptions	0	(−21% to 27%)	0.967	3	(−19% to 31%)	0.825	1	(−20% to 29%)	0.909	−26	(−47% to 3%)	45	(0% to 109%)

*Model I: adjusted for age in splines (<35. 36–50. 50<) and cohabitation.
†Model II: adjusted for covariates in model I and further adjusted for job group, shift and work hours.
‡Model III: adjusted for covariates in model II and further adjusted for stressful life events.
§Model III: where both work unit average and individual deviation from work unit average is included in the same regression analysis.