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

Table 6 Logistic regression analyses of biological markers. The table illustrates the final regression models predicting changes (Δ) in the biological markers DHEA-S, NPY, CgA and TNFα.

Predictors of Δ DHEA	OR	95,0% CI for OR Lower – Upper	Predictors of Δ NPY	OR	95,0% CI for OR Lower – Upper
Age^b	.863	.547 – 1.363	Age^b	.723	.466 – 1.121
Gender^b	.527	261 – 1.066	Gender^b	.533	.273 – 1.042
Marital status^b	1.982	.919 – 4.275	Marital status^b	1.510	.710 – 3.215
Educational level^b	1.368	.700 – 2.672	Educational level^b	1.294	.685 – 2.442
Annual income^b	.740	.415 – 1.321	Annual income^b	1.404	.807 – 2.442
Group^{a, b}	1.409	.726 – 2.735	Group^a.b	1.934	1.032 – 3.623
Constant	.277		Constant	.136
Predictors of Δ CgA	OR	95,0% CI for OR Lower – Upper	Predictors of Δ TNFα	OR	95,0% CI for OR Lower – Upper
Age^b	.643	.411 – 1.006	Age^b	.915	.593 – 1.412
Gender^b	1.449	.749 – 2.803	Gender^b	1.357	.698 – 2.638
Marital status^b	.767	.339 – 1.737	Marital status^b	.458	.182 – 1.154
Educational level^b	.732	.380 – 1.409	Educational level^b	1.508	.778 – 2.925
Annual income^b	.891	.502 – 1.581	Annual income^b	1.228	.695 – 2.169
Group^{a, b}	.629	.324 – 1.221	Group^a.b	3.185	1.637 – 6.196
Δ Stress management^c	2.343	1.157 – 4.744	Δ Stress management^c	.404	.182 – .895
Constant	.887		Constant	.130

^a Reference group: code 1, intervention group: code 2.
^b Baseline values.
^c Change in stress management ability. Can you manage your stress in general? (VAS, Not at all – Very well).

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