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Table 5 Logistic regression analyses of self-ratings. The table illustrates the final regression models predicting changes (Δ) in stress management ability, sleep quality, mental energy, concentration ability and social support.

From: Psychophysiological effects of a web-based stress management system: A prospective, randomized controlled intervention study of IT and media workers [ISRCTN54254861]

Predictors of Δ Stress management ability OR 95,0% CI for OR Lower – Upper Predictors of Δ Sleep Quality OR 95,0% CI for OR Lower – Upper
Ageb 1.041 .655 – 1.654 Ageb .718 .457 – 1,126
Genderb 1.144 .580 – 2.259 Genderb 1.391 .717 – 2.702
Marital statusb 1.255 .561 – 2.808 Marital statusb 1.175 .536 – 2.572
Educational levelb 1.261 .645 – 2.462 Educational levelb .826 .428 – 1.596
Annual incomeb 1.363 .766 – 2.424 Annual incomeb 1.532 .856 – 2.740
Groupa, b 2.364 1.220 – 4.578 Groupa, b 1.638 .854 – 3.141
Δ Concentration abilityf 2.754 1.389 – 5.461 Δ Mental energye 2.343 1.151 – 4.766
Δ CgA 2.563 1.223 – 5.256 Δ Concentration abilityf 2.259 1.125 – 4.533
Constant .002   Constant .012  
Predictors of Δ Mental energy OR 95,0% CI for OR Lower – Upper Predictors of Δ Concentration ability OR 95,0% CI for OR Lower – Upper
Ageb 1.152 .713 – 1,863 Ageb 1.348 .844 – 2.152
Genderb 1.319 .659 – 2.638 Genderb 1.250 .633 – 2.469
Marital statusb .998 .429 – 2.320 Marital statusb 1.280 .569 – 2.877
Educational levelb .861 .430 – 1.722 Educational levelb 1.033 .529 – 2.018
Annual incomeb .858 .471 – 1.562 Annual incomeb .784 .434 – 1.417
Groupa.b 2.194 1.107 – 4.346 Groupa, b .900 .454 – 1.783
Δ Sleep qualityd 2.350 1.156 – 4.775 Δ Sleep qualityd 2.145 1.052 – 4.376
Δ Concentration abilityf 3.831 1.910 – 7.683 Δ Mental energye 3.638 1.791 – 7.390
Constant .005   Δ Stress managementc 2.171 1.061 – 4.442
    Constant .005  
Predictors of Δ Social support OR 95,0% CI for OR Lower – Upper    
Ageb 1.456 .920 – 2.304    
Genderb 1.428 .734 – 2.779    
Marital statusb 1.822 .836 – 3.970    
Educational levelb .647 .335 – 1.248    
Annual incomeb .978 .557 – 1.717    
Groupa.b 2.752 1.432 – 5.287    
Constant .019     
  1. a Reference group: code 1, intervention group: code 2.
  2. b Baseline values.
  3. c Change in stress management ability. Can you manage your stress in general? (VAS, Not at all – Very well).
  4. d Change in sleep quality. How is your quality of sleep in general? (VAS, Very poor – Very good).
  5. e Change in mental energy. How is your energy level in general? (VAS, Empty on energy – Full of energy).
  6. f Change in concentration ability. How is your concentration ability in general? (VAS, Very poor – Very good).