Table 2.

Association between mental health and sample sizes in each confounder

Variables		Anxiety (n 282)			Stress (n 282)			Depression (n 282)
		cat1 (n)	cat2 (n)	P	cat1 (n)	cat2 (n)	P	cat1 (n)	cat2 (n)	P
Education	Illiterate	1	2	0⋅57	1	2	0⋅34	1	2	0⋅48
	Primary education	3	10		5	8		3	10
	Intermediate Education	6	12		3	13		5	13
	High school education	5	3		6	1		5	3
	Diploma	33	51		44	40		44	40
	Postgraduate education	13	13		12	14		13	13
	Bachelor's degree and higher	52	78		65	65		78	52
Job	Housekeeper	70	101	0⋅51	86	85	0⋅39	83	88	0⋅19
	Labour	2	2		2	2		2	2
	Management employee	21	25		8	28		25	21
	Non-managerial employee	12	22		22	12		25	9
	Household jobs	4	5		8	9		4	5
	University student	5	13		8	12		10	8
Marriage	Married	89	130	0⋅29	106	113	0⋅04	113	106	0⋅14
	Single	23	31		30	24		34	20
	Away from spouse more than 6 month	0	2		0	2		0	2
	Dead spouse	1	1		2	0		1	2
	Divorce	0	5		0	5		0	4
Monthly salary	Low	5	5	0⋅26	2	4	0⋅69	2	4	0⋅49
	Medium	4	8		7	6		6	7
	Good	36	76		43	74		42	71
	Excellent	53	95		61	87		68	82
Housing status	Owner	74	97	0⋅17	92	79	0⋅11	92	79	0⋅64
	Tenant	38	63		43	58		51	50
	Relatives’ house	2	5		2	4		3	3
	Organisation house	2	1		2	2		2	2
Economic status	Low	31	33	0⋅42	31	35	0⋅53	32	34	0⋅26
	Medium	49	88		61	82		66	77
	Good	40	41		41	32		41	32
Smoking	Yes	7	9	0⋅78	9	7	0⋅54	7	9	0⋅47
	No	107	159		129	137		141	125

χ² test for recognising confounders into categories. cat1: healthy mental; cat2: unhealthy mental.