Mental Strain and Chronic Stress among University Students with Symptoms of Irritable Bowel Syndrome

Table 6

Backward linear regression models for predicting IBS symptom severity.

Model	Predictor variables	𝛽	𝑡	𝑃
1	Anxiety (SCL-90-R)	.255	3.10	<.05
	Work overload (TICS)	.144	1.95	.053
	Dissatisfaction with job (TICS)	.100	1.35	.180
	Social tension (TICS)	.079	1.01	.312
	𝐹(4,176)=9.09,𝑃<.001;adj.𝑅^2=.155
2	Anxiety (SCL-90-R)	.284	3.68	<.001
	Work overload (TICS)	.150	2.04	<.05
	Dissatisfaction with job (TICS)	.109	1.47	.143
	𝐹(3,176)=11.77,𝑃<.001;adj.𝑅^2=.155
	adj.Δ𝑅^2=−.005,𝐹change(1,172)=1.03,𝑃=.312
3	Anxiety (SCL-90-R)	.319	4.30	<.001
	Work overload (TICS)	.157	2.14	<.05
	𝐹(2,176)=16.47,𝑃<.001;adj.𝑅^2=.149
	adj.Δ𝑅^2=−.010,𝐹change(1,173)=2.17,𝑃=.143

IBS: irritable bowel syndrome, SCL-90-R: symptom checklist 90 revised, TICS: Trier inventory for the assessment of chronic stress.