Table 2.

Changes in the prevalence of past-year use of sedatives-hypnotics from 2014 to 2018 in subgroups stratified by sociodemographic data and substance use among young adults (aged 18–39 years), stratified by sex

	Past-year use of sedatives-hypnotics in young adult males									Past-year use of sedatives-hypnotics in young adult females
	2014			2018						2014			2018
Variables	N	n	%wt		N	n	%wt	Change		N	n	%wt		N	n	%wt	Change
Marital status
Married	718	16	2.40	797		13	1.29	-1.11		11,299	39	3.06	1141		39	3.68	0.62
Divorced or widowed	80	9	15.06	77		8	13.24	-1.82		88	11	10.97	90		12	11.75	0.78
Single	2123	55	2.93	2492		50	2.31	-0.62		1598	44	2.39	1913		63	3.48	1.09¶
Education
>College	1760	44	1.93	2097		41	1.75	-0.18		1846	60	2.87	2161		70	3.27	0.40
Senior high	958	22	3.55	1083		22	2.36	-1.19		775	28	3.20	822		34	4.20	1.00
<Junior high	203	14	10.32	186		8	8.23	-2.09		194	6	2.10	161		10	8.69	6.59*
Occupationa
Group I	1412	34	2.27	1602		29	1.51	-0.76		1032	44	3.78	1180		42	3.04	-0.74
Group II	537	14	3.33	524		13	3.13	-0.20		760	25	3.24	904		35	4.38	1.14
Group III	279	9	5.45	411		8	2.87	-2.58		104	4	3.75	128		6	4.24	0.49
Group IV	693	23	3.48	829		21	3.04	-0.44		919	21	1.42	932		31	4.21	2.79*
Urbanicity
Urban	364	11	4.23	535		11	1.82	-2.41*		388	11	1.95	472		18	4.83	2.88*
Suburban	2094	59	2.79	2266		49	2.46	-0.33		2049	69	3.10	2158		73	3.08	-0.02
Rural	463	10	2.12	565		11	2.02	-0.10		378	14	4.27	514		23	5.95	1.68
Tobacco use	1003	43	5.44	943		28	3.55	-1.89*		196	22	8.85	202		33	15.95	7.10*
Alcohol use	1846	54	3.44	1932		47	2.59	-0.85		1329	66	3.97	1438		83	5.81	1.84*
Areca nut use	409	22	6.26	427		12	3.39	-2.87¶		21	1	2.69	40		4	4.35	1.66
Prescription analgesic use	175	13	9.23	109		11	9.65	0.42		205	16	5.72	119		14	11.34	5.62

^aGroup I = other occupations; II = service and sales workers; III = plant and machine operators and assemblers, elementary laborers; and IV = unemployed or retired

*P < 0.05 for a z-test comparing two proportions for changes (%), and ¶ at 0.05 < P < 0.06