Table 6.

Adjusted ORs for alcohol use disorder exposure, demographic and school factors significantly associated with <80% attendance, non-Indigenous mothers

		OR*	95% CI
Alcohol diagnosis	No alcohol diagnosis	Ref
	During pregnancy	1.52	1.17 to 1.98
	>1 years postpregnancy	1.55	1.41 to 1.70
	>1 year prepregnancy	1.62	1.46 to 1.80
	Up to 1 year postpregnancy	1.36	1.04 to 1.78
	Up to 1 year prepregnancy	1.58	1.30 to 1.92
Marital status	Married	Ref
	Never married	1.33	1.22 to 1.45
	Separated, widowed, divorced	1.52	1.24 to 1.88
Socioeconomic status	Most advantaged>10%	Ref
	Second group 10% to <25%	1.18	0.91 to 1.53
	Third group 25% to <50%	1.36	1.07 to 1.72
	Fourth group 50% to <75%	1.48	1.17 to 1.87
	Fifth group 75% to <90%	1.68	1.32 to 2.13
	Most disadvantaged bottom 10%	1.79	1.41 to 2.28
	Unknown	1.30	1.01 to 1.68
Any maternal mental health record	No	Ref
	Yes	1.20	1.11 to 1.30
Maternal age at child’s birth	20–<25 years	Ref
	<20 years	1.42	1.29 to 1.58
	25–<30 years	0.87	0.79 to 0.95
	30–<35 years	0.78	0.70 to 0.86
	35–<40 years	0.76	0.66 to 0.88
	40+ years	0.91	0.69 to 1.21
Parity	0	Ref
	1	1.26	1.16 to 1.37
	2	1.73	1.56 to 1.92
	3+	2.47	2.19 to 2.78
Number of schools	One school	Ref
	Two schools	2.41	2.20 to 2.64
	Three or more schools	3.48	2.49 to 4.87
School type	Primary	Ref
	Combined	1.11	0.94 to 1.31
	Secondary	1.36	1.19 to 1.56
	Other	0.97	0.81 to 1.18
School area	Metropolitan	Ref
	Provincial	0.99	0.92 to 1.07
	Remote, very remote, closed	1.25	1.12 to 1.40
Year level	1	Ref
	2	0.82	0.73 to 0.92
	3	0.81	0.71 to 0.92
	4	0.80	0.70 to 0.92
	5	0.84	0.72 to 0.97
	6	0.88	0.75 to 1.03
	7	1.01	0.86 to 1.20
	8	1.45	1.18 to 1.78
	9	2.54	2.06 to 3.14
	10	3.75	3.02 to 4.66
Ever suspended	No	Ref
	Yes	2.36	2.19 to 2.54

*Adjusted for all other variables in the table and baby year of birth (matching variable).