. 2021 Jul 22;7(4):e137. doi: 10.1192/bjo.2021.967

Table 1.

Association between covariates and cannabis use, depression and anxiety disorders in Northern Finland Birth Cohort 1986

				Cannabis use frequency					Anxiety disorder					Depression
	Total, n	N = 6325		No cannabis use, n = 5973		Once or more, n = 352		P-value	No anxiety disorder, n = 5637		Anxiety disorder, n = 688		P-value	No depression, n = 5742		Depression, n = 583		P-value
	Total, n	n	%	n	%	n	%	P-value	n	%	n	%	P-value	n	%	n	%	P-value
Gender	6325
Male		3089	48.8	2929	49.0	160	45.5	0.191	2847	50.5	242	35.2	<0.001	2888	50.3	201	34.5	<0.001
Female		3236	51.2	3044	51.0	192	54.5		2790	49.5	446	64.8		2854	49.7	382	65.5
Family structure	5413
Other		1102	20.4	1004	19.6	98	33.4	<0.001	945	19.5	157	27.3	<0.001	960	19.5	142	28.7	<0.001
Family with two parents		4311	79.6	4116	80.4	195	66.6		3893	80.5	418	72.7		3958	80.5	353	71.3
Parental education	5066
<12 years		3050	60.2	2905	60.5	145	54.9	0.072	2723	59.9	327	62.8	0.208	2783	60.3	267	59.7	0.830
≥12 years		2016	39.8	1897	39.5	119	45.1		1822	40.1	194	37.2		1836	39.7	180	40.3
Cannabis use	6325
No		5973	94.4	352	100.0	0	0.0	-	5352	94.9	621	90.3	<0.001	5461	95.1	512	87.8	<0.001
Yes		352	5.6	0	0.0	5973	100.0		285	5.1	67	9.7		281	4.9	71	12.2
Daily smoking	5871
No		5151	87.7	4977	89.7	174	54.2	<0.001	4624	88.5	527	81.8	<0.001	4712	88.5	439	80.3	<0.001
Yes		720	12.3	573	10.3	147	45.8		603	11.5	117	18.2		612	11.5	108	19.7
Other illicit drug use	6299
No		6268	99.5	5942	99.9	326	92.9	<0.001^a	5593	99.6	675	98.4	<0.001^a	5696	99.6	572	98.6	0.006^a
Yes		31	0.5	6	0.1	25	7.1		20	0.4	11	1.6		23	0.4	8	1.4
Alcohol intoxication ≥10 times in the past year	6167
No		5024	81.5	4910	84.4	114	32.9	<0.001	4510	82.1	514	76.3	<0.001	4598	82.2	426	74.2	<0.001
Yes		1143	18.5	910	15.6	233	67.1		983	17.9	160	23.7		995	17.8	148	25.8
Parental psychiatric disorder	6325
No		4046	64.0	3836	64.2	210	59.7	0.083	3693	65.5	353	51.3	<0.001	3742	65.2	304	52.1	<0.001
Yes		2279	36.0	2137	35.8	142	40.3		1944	34.5	335	48.7		2000	34.8	279	47.9
Youth Self-Report		Mean	s.d.	Mean	s.d.	Mean	s.d.		Mean	s.d.	Mean	s.d.		Mean	s.d.	Mean	s.d.
Internalising symptoms	5876	9.6	7.5	9.4	7.4	11.8	8.9		9.3	7.3	12.0	8.6		9.2	7.2	13.4	8.9
Externalising symptoms	5892	13.8	7.9	13.5	7.6	20.3	9.6		13.6	7.7	16.2	8.9		13.5	7.7	16.9	8.8

^a.

Fisher's exact test.