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Table 2 Social demographic characteristics of migrant children aged 1–4 years and their mothers before and after the implementation of EPI intervention package in Yiwu

From: Does introducing an immunization package of services for migrant children improve the coverage, service quality and understanding? An evidence from an intervention study among 1548 migrant children in eastern China

Variables Before interventions (N = 1136) After interventions (N = 412) χ 2 P
N % N %
Maternal age      3.533 0.060
  < 30 y 716 63.0 281 68.2   
  ≥ 30y 420 37.0 131 31.8   
Maternal education level      5.844 0.211
 Illiteracy 15 1.3 3 0.7   
 Primary school 78 6.9 26 6.3   
 Junior middle school 620 54.6 242 58.7   
 Senior middle school 315 27.7 94 22.8   
 College or above 108 9.5 47 11.4   
Mothers working time      1.612 0.447
 No job 240 21.1 82 19.9   
  ≤ 8 h 213 18.8 89 21.6   
  > 8 h 683 60.1 241 58.5   
Gender of child      0.247 0.619
 Male 598 52.6 211 51.2   
 Female 538 47.4 201 48.8   
Age of child      1.644 0.440
 1 year- 524 46.1 204 49.5   
 2 years- 415 36.5 145 35.2   
 3–4 years 197 17.3 63 15.3   
Number of children in family      0.947 0.623
 1 445 39.2 171 41.5   
 2 608 53.5 209 50.7   
  ≥ 3 83 7.3 32 7.8   
Birth place of child      0.655 0.418
 Hospital 1024 90.1 377 91.5   
 At home 112 9.9 35 8.5   
Latest continuously living time of child      1.606 0.448
 3–6 months 266 23.4 84 20.4   
 7–12 months 479 42.2 179 43.4   
  ≥ 13 months 391 34.4 149 36.2   
Monthly household income per capita      0.698 0.705
  < 800 CNY 208 18.4 68 16.5   
 800–1500 CNY 589 51.8 220 53.4   
  > 1500 CNY 339 29.8 124 30.1