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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Drug Alcohol Depend. 2013 Nov 19;134:355–361. doi: 10.1016/j.drugalcdep.2013.11.011

Table 2.

Results from cross-classified multilevel regression analysis of net effects of age, period and cohort on hospitalization for DA in Swedish men and women (1975-2010)

Males Females
Fixed effects (Odds
Ratios)
Age (centred) 1.062 (1.047-1.079) 1.034 (1.018-1.054)
Age 2 0.996 (0.995-0.996) 0.997 (0.997-0.997)
Random effects
Period 0.045 (0.013-0.173) 0.206 (0.067-0.637)
Cohort 0.132 (0.052-0.396) 0.147 (0.059-0.437)
ICC (%)
Period 1.3 5.3
Cohort 3.8 4.2
Period+Cohort 5.1 9.5