Association between long working hours and unmet dental needs in wage workers

BMC Oral Health

Table 1 Characteristics of study subjects

		Total	No		Yes		p
		Total	N	wt%	N	wt%	p
Gender	Man	5963	4177	70.0	1786	30.0	< .0001
Gender	Woman	6141	3979	64.8	2162	35.2
Age group (years)	20 ~ 39	4646	3128	67.9	1518	32.1	.256
	40 ~ 59	5482	3668	66.7	1814	33.3
	≥ 60	1976	1360	69.2	616	30.8
Marital status	Experience	9541	6435	67.5	3106	32.5	.028
Marital status	In-Experience	2563	1721	67.7	842	32.3
Education level	≤ Middle school	2394	1513	63.5	881	36.5	< .0001
	High school	4195	2723	64.6	1472	35.4
	≥ University	5515	3920	71.2	1595	28.8
Household income	Under	1137	696	61.5	441	38.5	< .0001
	Medium low	2845	1813	63.4	1032	36.6
	Slander	3832	2555	66.8	1277	33.2
	Award	4290	3092	72.3	1198	27.7
Residence	Dong	10324	7029	68.3	3295	31.7	.001
Residence	Eup, Myeon	1780	1127	62.5	653	37.5
Occupational group	White collar	5680	3965	70.3	1715	29.8	< .0001
	Pink collar	2093	1374	66.5	719	33.5
	Blue collar	4331	2817	64.3	1514	35.7
Working hours (per week)	< 40 h	4124	2770	67.0	1354	33.0	.002
	40 ~ 52 h	5875	4022	69.0	1853	31.0
	≥ 52 h	2105	1364	64.3	741	35.7
Employment status	Full-time	8429	5816	69.2	2613	30.8	< 0001
Employment status	Temporary/Daily	3675	2340	63.6	1335	36.4
Work schedule	Day work	10012	6732	67.3	3280	32.7	.042
	Rotational shift work	784	565	72.2	219	27.8
	Other	1308	859	66.7	449	33.3
Sum		12104	8156	67.5	3948	32.5

ISSN: 1472-6831