Table 1 Characteristics of study participants
(n = 2000) | Men | Women | |||
|---|---|---|---|---|---|
Socioeconomic attributes | n | % | n | % | |
Age (years) | 16–19 | 49 | 4.9 | 42 | 4.2 |
20–29 | 283 | 28.3 | 290 | 29.0 | |
30–39 | 334 | 33.4 | 334 | 33.4 | |
40–49 | 334 | 33.4 | 334 | 33.4 | |
Marital status | Yes | 343 | 34.3 | 403 | 40.3 |
No | 657 | 65.7 | 597 | 59.7 | |
Parity | Yes | 278 | 27.8 | 271 | 27.1 |
No | 708 | 70.8 | 700 | 70.0 | |
Currently pregnant | 14 | 1.4 | 29 | 2.9 | |
Employment | Full Time | 710 | 71.0 | 429 | 42.9 |
Part Time | 84 | 8.4 | 208 | 20.8 | |
No work/In School | 113 | 11.3 | 78 | 7.8 | |
No work/No study | 93 | 9.3 | 285 | 28.5 | |
Final education | Junior/High schools | 261 | 26.1 | 335 | 33.5 |
Vocational/Junior colleges | 201 | 20.1 | 343 | 34.3 | |
Universities/Graduate schools | 538 | 53.8 | 322 | 32.2 | |
Annual household income (Yen) | Less than 2 million | 128 | 12.8 | 189 | 18.9 |
2 Less than - 5 million | 370 | 37.0 | 430 | 43.0 | |
5 Less than - 10 million | 308 | 30.8 | 250 | 25.0 | |
10 million or more | 81 | 8.1 | 53 | 5.3 | |
Students | 113 | 11.3 | 78 | 7.8 | |
Health status | n | % | n | % | |
Body Mass Index | Mean (SD) | 22.8 | 3.9 | 21.1 | 4.2 |
Hours of sleep per day | Median (25–75 percentile) | 6 | 6–7 | 6 | 6–7 |
Current health status | Very well | 187 | 18.7 | 152 | 15.2 |
Moderately well | 274 | 27.4 | 287 | 28.7 | |
Normal | 372 | 37.2 | 369 | 36.9 | |
Slightly well | 129 | 12.9 | 158 | 15.8 | |
Not at all well | 38 | 3.8 | 34 | 3.4 | |
Regular health checkups | Yearly visit | 639 | 63.9 | 499 | 49.9 |
Occasional visit | 129 | 12.9 | 182 | 18.2 | |
No visit | 232 | 23.2 | 319 | 31.9 | |
Current desire for pregnancy | Yes | 124 | 12.4 | 156 | 15.6 |
No | 876 | 87.6 | 844 | 84.4 | |
Current drinking | Yes | 421 | 44.3 | 250 | 26.1 |
No | 530 | 55.7 | 708 | 73.9 | |
Current smoking | Yes | 285 | 30.0 | 135 | 14.1 |
No | 666 | 70.0 | 823 | 85.9 | |