Association between overtime work hours and preventive dental visits among Japanese workers

BMC Public Health

Table 2 Distribution of preventive dental visits according to sex among 14,845 workers, excluding missing data for preventive dental visits (n = 2)

		Quarterly preventive dental visit						Annual preventive dental visit
		Men			Women			Men			Women
		N	%	p value	N	%	p value	N	%	p value	N	%	p value
Age, years	≤29	40	4.5	< 0.001	67	9.4	< 0.001	149	16.7	< 0.001	157	21.9	< 0.001
	30–39	178	7.6		142	15.2		545	23.3		345	37.0
	40–49	382	9.1		154	11.9		969	23.2		410	31.6
	50–59	437	11.6		148	20.5		1009	26.8		253	35.0
Occupation
	clerk	322	9.5	0.056	193	13.9	0.898	821	24.2	< 0.001	447	32.3	0.031
	sales	427	10.0		128	14.9		1116	26.0		273	31.7
	research and development	126	8.8		109	13.3		356	24.9		280	34.1
	engineer	23	8.3		9	10.5		49	17.8		15	17.4
	production line and engineer	123	7.9		55	14.5		285	18.2		116	30.5
	others	16	7.0		17	12.6		45	19.7		34	25.2
Marriage status	Married	845	9.6	0.069	243	13.7	0.403	2212	25.2	< 0.001	593	33.3	0.027
	Single	167	8.0		234	13.9		403	19.3		498	29.6
	Divorce or bereavement	22	8.4		31	17.3		49	18.8		65	36.3
	Missing	3	7.9		3	10.0		8	21.1		9	30.0
Education (graduate status)	Junior high school or high school	138	8.4	0.024	127	13.9	0.896	300	18.3	< 0.001	262	28.7	0.020
	Junior college or technical school or high professional school	38	8.2		93	13.4		83	17.9		206	29.6
	College	613	10.1		196	14.5		1568	25.7		461	34.0
	More than graduate school	246	8.4		92	13.5		717	24.3		229	33.7
	Missing	2	5.3		3	11.5		4	10.5		7	26.9
Dental problems	No	897	8.7	< 0.001	457	13.4	0.001	2410	23.5	< 0.001	1075	31.5	0.113
	Yes	118	19.2		48	21.7		219	35.6		81	36.7
	Missing	22	7.4		6	16.2		43	14.4		9	24.3
Overtime work hours	None	153	11.8	0.009	100	15.6	0.560	384	29.5	< 0.001	232	36.1	0.053
	< 20	576	9.2		315	13.7		1479	23.6		724	31.5
	20≤, < 40	240	8.7		83	13.9		634	22.9		174	29.2
	40≤	68	8.4		12	11.4		169	20.8		31	29.5
	Missing	0	0		1	4.5		6	17.6		4	18.2

ISSN: 1471-2458