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Table 1 Characteristics of sample

From: Neighborhood social capital and infant physical abuse: a population-based study in Japan

  Total (n = 1277) Abuse (n = 115, 9.0 %) Non-abuse (n = 1162, 91 %) P for Chi square
N % N % N %
Household characteristics
 Marital status
  Married 1255 98.3 112 97.4 1143 98.4 0.503
  Unmarried/divorced/other 19 1.5 3 2.6 16 1.4  
  Missing 3 0.2 0 0.0 3 0.3  
 Living with grand parents or others
  Yes 138 10.8 14 12.2 124 10.7 0.621
  No 1139 89.2 101 87.8 1038 89.3  
 Annual household income (million yen)
  ≤2 33 2.6 5 4.4 28 2.4 0.474
  2.1–4 369 28.9 34 29.6 335 28.8  
  4.1–6 444 34.8 41 35.7 403 34.7  
  6.1–8 197 15.4 13 11.3 184 15.8  
  8+ 92 7.2 6 5.2 86 7.4  
  No answer 142 11.1 16 13.9 126 10.8  
Infant characteristics
 Sex
  Male 643 50.4 65 56.5 578 49.7 0.328
  Female 630 49.3 50 43.5 580 49.9  
  Missing 4 0.3 0 0.0 4 0.3  
 Birth order
  First 623 48.8 61 53.0 562 48.4 0.558
  Subsequent 651 51.0 54 47.0 597 51.4  
  Missing 3 0.2 0 0.0 3 0.3  
 Birth weight (g)
  <2500 118 9.2 15 13.0 103 8.9  
  2500+ 1136 89.0 99 86.1 1037 89.2  
  Missing 23 1.8 1 0.9 22 1.9