Gender differences in the bidirectional relationship between alcohol consumption and sleeplessness: the Tromsø study

Table 4 Logistic regression analysis of alcohol use for men according to change in sleeplessness

Sleeplessness	Model 1^a		Model 2^b		Model 3^c		Model 4^d
Sleeplessness	OR	CI _.95	OR	CI _.95	OR	CI _.95	OR	CI _.95
Stable sleeplessness, high T1-high T2	2.01***	1.38–2.91	2.32***	1.58–3.44	1.98***	1.30–3.02	1.84**	1.19–2.85
Increasing, low T1-high T2	1.80***	1.34–2.40	1.96***	1.45–2.65	1.81***	1.31–2.51	1.78***	1.28–2.47
Decreasing, high T1-low T2	1.10	0.71–1.70	1.08	0.69–1.68	1.02	0.63–1.65	1.00	0.59–1.58
Stable no sleeplessness, low T1-low T2	Ref.		Ref.		Ref.		Ref.

Notes. *** p < .001, ** p < .01, *p < .05. CI_.95 = 95% confidence interval
^aCrude estimates
^bAdjusted for age, education and marital status
^cAdjusted for Model 2 + symptoms of alcohol use at T1
^dAdjusted for Model 3 + mental health problems, somatic health problems, BMI, and social welfare benefits

ISSN: 1471-2458