Table 6. Mixed logistic regression with the purpose of estimating the family load, which is measured as a random effect.

	TOTAL			ALC			MULT
	OR	SE	95% CI	OR	SE	95% CI	OR	SE	95% CI
Sex
Female	1.00		Reference	1.00		Reference	1.00		Reference
Male	1.57**	0.06	1.45–1.69	1.30*	0.11	1.10–1.53	1.59**	0.09	1.42–1.79
Month of birth
January	1.00		Reference	1.00		Reference	1.00		Reference
February	0.96	0.10	0.79–1.18	0.87	0.19	0.57–1.33	0.99	0.14	0.74–1.32
March	1.00	0.10	0.83–1.22	0.95	0.20	0.63–1.44	0.87	0.13	0.66–1.15
April	1.03	0.10	0.85–1.25	1.14	0.22	0.78–1.68	0.87	0.13	0.66–1.16
May	1.13	0.11	0.93–1.36	1.16	0.23	0.78–1.71	0.98	0.14	0.74–1.29
June	1.15	0.11	0.95–1.39	1.05	0.22	0.70–1.58	0.94	0.13	0.71–1.25
July	1.09	0.11	0.90–1.31	1.16	0.23	0.78–1.71	0.97	0.14	0.74–1.28
August	1.22*	0.12	1.01–1.47	1.10	0.23	0.73–1.66	1.11	0.15	0.84–1.45
September	1.22*	0.12	1.01–1.48	1.10	0.22	0.74–1.64	1.13	0.16	0.86–1.48
October	1.25*	0.12	1.04–1.51	1.12	0.23	0.74–1.69	1.06	0.15	0.80–1.40
November	1.27*	0.12	1.05–1.54	0.91	0.20	0.58–1.40	1.33*	0.18	1.02–1.75
December	1.21	0.12	1.00–1.47	0.98	0.21	0.65–1.49	1.13	0.16	0.85–1.49
Year of birth	1.02**	0.00	1.02–1.02	1.02**	0.00	1.01–1.02	1.04**	0.00	1.04–1.04
Region of residence
City of Copenhagen	1.00		Reference	1.00		Reference	1.00		Reference
Other regions	0.87*	0.04	0.79–0.97	0.90	0.09	0.74–1.09	0.85*	0.06	0.73–0.98
	RE	SE	95% CI	RE	SE	95% CI	RE	SE	95% CI
Standard deviation	1.18	0.04	1.10–1.26	0.87	0.09	0.70–1.07	1.12	0.06	1.00–1.25
Contribution to variance	0.30	0.01	0.27–0.32	0.19	0.03	0.13–0.26	0.27	0.02	0.23–0.32

* = p<0.05

** = p<0.001

RE = random effect results