Table 1 Basic characteristics of the respondent
Characteristics | n | result |
|---|---|---|
Mean maternal age, years (\( \overline{x}\pm s \)) | 15,980 | 27.6 ± 4.5 |
Family monthly expenditure ( \( \yen, \overline{x}\pm s \) ) | 15,980 | 2789.6 ± 531.8 |
Mother’s place of residence (%) | ||
Urban | 3835 | 24.0 |
Rural | 12,145 | 76.0 |
Region (%) | ||
Southern Shaanxi Region | 4395 | 27.5 |
Northern Shaanxi Region | 2796 | 17.5 |
Middle Shaanxi Region | 8789 | 55.0 |
Educational levels (%) | ||
Elementary school and below | 1326 | 8.3 |
Junior high school | 7463 | 46.7 |
High school and secondary school | 3532 | 22.1 |
University degree and above | 3659 | 22.9 |
Occupation (%) | ||
Peasantry | 9940 | 62.2 |
Worker | 975 | 6.1 |
Private teacher | 368 | 2.3 |
Cadres and civil servants | 335 | 2.1 |
Business and service industry | 1806 | 11.3 |
Technicians and other intellectuals | 479 | 3.0 |
Soldier | 2077 | 13.0 |
Newborn age (month, \( \overline{x}\pm s \)) | 15,980 | 6.6 ± 2.6 |
Gender (%) | ||
Baby boy | 8501 | 53.2 |
Baby girl | 7479 | 46.8 |
Birth weight (g, \( \overline{x}\pm s \)) | 15,980 | 3279.9 ± 454.6 |