Table 4

Hierarchical multiple regression analyses of lung function impairments and risk knowledge on mental health and psychological strain outcomes

Outcome variables	Mental health outcomes						Psychological strain outcomes
Predictor variables	Depression			Anxiety			Specific fear of cancer			Intrusion
Predictor variables	β	T	P value	β	T	P value	β	T	P value	β	T	P value
Diagnosis of non-malignant ARDs	−0.05	−0.78	0.435	0.07	1.10	0.272	0.13	2.01	0.046	0.17	2.99	0.003
Obstruction	0.18	2.93	0.004	0.22	3.78	<0.001	0.01	0.20	0.841	0.05	0.99	0.323
Restriction	0.00	−0.02	0.988	0.04	0.69	0.491	0.06	0.93	0.356	0.12	2.15	0.032
Adjusted R² of the model	0.04			0.12			0.06			0.10
F value	2.84		0.011	7.68		<0.001	4.07		0.001	6.78		<0.001
Total N in the model	290			297			271			326