Table 1 Sample characteristics
Children born in 1990/3/1~1992/12/31 (n = 190) % | Children born in 1993/1/1~1995/2/28 (n = 230) % | Children born in 1996/1/1~1997/12/31 (n = 696) % | Children born in 1998/1/1~1999/12/31 (n = 459) % | |
|---|---|---|---|---|
The gender of the child | ||||
Male | 51.05 | 57.39 | 54.31 | 53.59 |
Female | 48.95 | 42.61 | 45.69 | 46.41 |
The birth order of the child | ||||
Rank 1 | 71.05 | 91.30 | 46.55 | 56.86 |
Rank 2 | 23.68 | 6.52 | 45.40 | 38.13 |
Rank 3 or higher | 5.26 | 2.17 | 8.05 | 5.01 |
Maternal age when the child was born | ||||
Younger than 30 | 86.84 | 86.09 | 66.67 | 69.93 |
30–34 | 13.16 | 12.61 | 25.00 | 23.31 |
35–39 | 0.00 | 1.30 | 7.47 | 6.10 |
40 or over | 0.00 | 0.00 | 0.86 | 0.65 |
Any abnormal condition during this pregnancy | ||||
Yes | 11.58 | 9.13 | 10.20 | 12.20 |
No | 88.42 | 90.87 | 89.80 | 87.80 |
The urbanization level of residence during this pregnancy | ||||
Large cities | 47.89 | 38.70 | 46.70 | 47.06 |
Small cities/towns | 34.21 | 39.13 | 37.21 | 36.82 |
Rural areas | 17.89 | 22.17 | 16.09 | 16.12 |
The year when the mother was born | ||||
After 1970 | 10.53 | 31.74 | 43.39 | 60.57 |
1960–1969 | 82.11 | 64.78 | 52.44 | 37.91 |
Before 1959 | 7.37 | 3.48 | 4.17 | 1.53 |
The number of children for the mother in 2000 (the survey year) | ||||
1 child | 0.00 | 0.00 | 30.46 | 42.05 |
2 children | 67.37 | 83.91 | 58.48 | 51.20 |
3 children or over | 32.63 | 16.09 | 11.06 | 6.75 |
Maternal ethnic background | ||||
Fu-Chien | 75.79 | 78.70 | 70.55 | 73.64 |
Hakka | 12.11 | 8.26 | 10.63 | 8.93 |
Mainland China | 8.95 | 9.57 | 14.08 | 11.33 |
Aboriginal/foreign | 3.16 | 3.48 | 4.74 | 6.10 |
Maternal marital status in 2000 | ||||
Currently married | 98.95 | 99.13 | 96.98 | 98.69 |
Not currently married | 1.05 | 0.87 | 3.02 | 1.31 |
Maternal educational level in 2000 | ||||
No more than junior high school | 25.26 | 22.61 | 15.80 | 14.81 |
Senior high school | 54.21 | 55.22 | 57.18 | 57.95 |
College or above | 20.53 | 22.17 | 27.01 | 27.23 |
Monthly family income in Taiwanese dollar in 2000 | ||||
Less than 50,000 | 38.42 | 40.87 | 39.37 | 45.32 |
50,000–69,000 | 38.95 | 37.83 | 36.49 | 31.37 |
70,000 or more | 22.63 | 21.30 | 24.14 | 23.31 |