Final models of stepwise multiple regression analyses on prospective data
Hospital nurses (n=558) Subjective health complaints after one year | Hospital nurses (n=614) Sickness absence after one year | Truck drivers (n=625) Sickness absence after two years | ||||
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Baseline variables | Beta | p value | Beta | p value | Beta | p value |
Subjective health complaints after one year and sickness absence after one or two years as dependent variable and baseline no. work hours/week, physical demands, mental/emotional demands, lack of decision latitude, lack of autonomy/break control, age, and baseline need for recovery as independent variables. | ||||||
*Lost significance from first step. | ||||||
Work demands | ||||||
Entered in step 1 | ||||||
No. work hours/week | 0.01 | 0.759 | −0.01 | 0.833 | −0.02 | 0.581 |
Physical demands | −0.04 | 0.373 | 0.13 | 0.002 | ||
Mental/emotional demands | 0.08 | 0.035 | −0.06 | 0.152 | 0.04 | 0.413 |
Lack of decision latitude | 0.06 | 0.106* | 0.01 | 0.781 | 0.06 | 0.221 |
Lack of autonomy/break control | −0.02 | 0.728 | ||||
Added in step 2 | ||||||
Age at T1 | 0.12 | 0.001 | 0.09 | 0.018 | 0.03 | 0.489 |
Added in step 3 | ||||||
Need for recovery at T1 | 0.49 | 0.000 | 0.19 | 0.000 | 0.11 | 0.021 |
Model summary | ||||||
Total adjusted R2 | 0.30 | 0.07 | 0.02 | |||
Change from step 2 to step 3 in R2 | 0.19 | 0.03 | 0.007 | |||
Change from step 2 to step 3 | 0.000 | 0.000 | 0.021 | |||
F of regression equation | 38.84 | 8.90 | 3.03 | |||
Significance of F | 0.000 | 0.000 | 0.006 |