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Table 1 Description of variables

From: Childhood health and social class reproduction in China

N = 6726   
Variables Mean/percentage Notes
Father's ISEI score when respondent was at age 14 23.31 (15.82) Range: 11.74–85.41
Father's educational attainment   
Never attended school 43.03%  
 Primary school 38.27%  
 Middle school 11.30%  
 High school or above 7.39%  
Mother’s educational attainment   
 Never attended school 62.96%  
 Primary school 27.52%  
 Middle school 6.13%  
 High school or above 3.39%  
Father's household registration status when respondent was at age 14 0.163 (0.369) Non-agricultural household registration = 1; agricultural household registration = 0
Mother's household registration status when respondent was at age 14 0.132 (0.338) Non-agricultural household registration = 1; agricultural household registration = 0
Sex 0.506 (0.5) Male = 1; female = 0
Age 43.97 (8.67) Range: 30–60
Ethnicity 0.913 (0.282) Ethnic Han = 1; ethnic minority = 0
Frequency of eating fish etc 3.398 (2.156) Range: 0–8, from “never eat” to “at least once per day”
Height (cm) 163.44 (7.89) Range: 110–197
Years of schooling 7.890 (4.249) Range: 0–19
ISEI of first job 26.37 (16.47) Range: 11.74–88.7
ISEI of current job 29.31 (17.81) Range: 11.74–88.96
Self-assessment of current state of health   
 Poor 7.55%  
 Fair 29.42%  
 Good 39.30%  
 Excellent 23.73%  
  1. (1) standard deviations in parentheses; (2) the variables “experience of suffering hunger”, “source of drinking water” and “type of sanitation amenity” are listed in the column 5 of Table 2 (in percentage)