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Table 4 Explaining sleep disorders – results of stepwise multiple linear regression analyses

From: Work- and stress-related musculoskeletal and sleep disorders among health professionals: a cross-sectional study in a hospital setting in Switzerland

Dependent variable:
 Sleep disorders
 (single-item scale from 1 ‘not at all’ to 3 ‘severe’)
Nurses (and midwives)PhysiciansTherapists and other health professionalsAll health professionals
n = 718n = 222n = 292N = 1232
beta coeff. (β)beta coeff. (β)beta coeff. (β)beta coeff. (β)
Step 1Step 2Step 1Step 2Step 1Step 2Step 1Step 2
(Independent variables:)
 Musculoskeletal disorders
 (two-item scale from 0 ‘none’ to 4 ‘very severe’)
.24***.11**.12−.01.20***.09.21***.09**
 General stress
 (single-item scale from 1 ‘not at all’ to 5 ‘very strong’)
.33***.38***.44***.36***
 Work stress
 (ERI ratio from 0.3 ‘lowest’ to 3.7 ‘highest’)
.07.11.01.06
 Physical effort at work
 (three-item scale from 0 ‘lowest’ to 12 ‘highest’)
−.01−.12−.05−.03
 Poor posture at work
 (single-item scale from 0 ‘never’ to 4 ‘permanently’)
.09.05−.02.06
(Control variables:)
 Sex (male).03.05−.04−.05.08.03.02.01
 Age (< 25, 25–34, 35–44, 45–54, 55+).14***.15***.11.13.17**.13*.14***.14***
 Educational level (scale from 1 ‘low’ to 4 ‘very high’).02.02.00−.05−.01−.05.02−.01
 Adjusted R square.070.211.006.150.053.217.057.203
 No. cases in model68957721018528825211891016
  1. *p ≤ .05; **p < .01; ***p < .001; no * = not significant (p > .05)