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

Table 5 Logistic regression analysis of alcohol use for women 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	0.86	0.56–1.30	1.25	0.80–1.94	1.20	0.80–1.94	1.29	0.79–2.11
Increasing, low T1-high T2	1.11	0.82–1.50	1.31	0.97–1.78	1.30	0.97–1.79	1.34	0.97–1.85
Decreasing, high T1-low T2	1.00	0.59–1.58	1.16	0.70–1.91	1.22	0.72–2.06	1.27	0.74–2.17
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

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