Table 1.

Characteristics of young Korean females (aged 15–39)

	Age groups
	15–29		30–39		Total
	N (%) (mean)	Weighted no (SE)	N (%) (mean)	Weighted no (SE)	N (%) (mean)	Weighted no (SE)
Age	(22.3)	(0.1)	(34.6)	(0.1)	(27.8)	(0.2)
15–29	1737	2 660 008			1737 (46.5%)	2 660 008
30–39			1997	2 142 747	1997 (53.5%)	2 142 747
Menarche age	(13.6)	(0.3)	(13.7)	(0.1)	(13.6)	(0.1)
Body mass index (kg/m2)	(21.4)	(0.1)	(22.6)	(0.1)	(21.9)	(0.1)
Education levels
<6	60 (3.5%)	78 811	10 (0.5%)	17 925	70 (2.0%)	96 736
6–9	367 (21.7%)	571 868	25 (1.3%)	38 998	392 (10.7%)	610 866
10–12	643 (37.9%)	1 029 906	766 (39.2%)	884 053	1409 (38.6%)	1 913 959
>12	625 (36.9%)	912 657	1152 (59.0%)	1 137 606	1777 (48.7%)	2 050 263
Total household income
1Q (lowest)	172 (10.0%)	314 580	103 (5.2%)	143 533	275 (7.5%)	458 113
2Q	434 (25.4%)	719 372	558 (28.3%)	647 924	992 (26.9%)	1 367 296
3Q	528 (30.8%)	780 705	748 (37.9%)	780 036	1276 (34.6%)	1 560 740
4Q (highest)	579 (33.8%)	801 415	564 (28.6%)	540 223	1143 (31.0%)	1 341 638
Smoking status
Never smoker	1453 (83.6%)	2 180 333	1669 (83.6%)	1 732 637	3122 (83.6%)	3 912 970
Ex-smoker	116 (6.7%)	192 018	168 (8.4%)	196 330	284 (7.6%)	388 347
Current-smoker	168 (9.7%)	287 657	160 (8.0%)	213 781	328 (8.8%)	501 438
Alcohol consumption (per month)
1 or less	975 (56.1%)	1 466 194	1059 (53.0%)	1 111 771	2034 (54.5%)	2 577 965
1 or more	762 (43.9%)	1 193 814	938 (47.0%)	1 030 976	1700 (45.5%)	2 224 790
Current job
No	980 (56.4%)	1 489 081	1096 (54.9%)	1 161 981	2076 (55.6%)	2 651 062
Yes	757 (43.6%)	1 170 927	901 (45.1%)	980 766	1658 (44.4%)	2 151 693
Cervical screening
No	1471 (84.7%)	2 256 700	533 (26.7%)	649 545	2004 (53.7%)	2 906 245
Yes	266 (15.3%)	403 308	1464 (73.3%)	1 493 202	1730 (46.3%)	1 896 511
Total	1737 (100.0%)	2 660 008	1997 (100.0%)	2 142 747	3734 (100.0%)	4 802 755