Table 2: The multilevel logistic analysis of low birth weight infants (n= 15,126).

Characteristics Difference between LBW and Normal Odds Ratio Standard Error p>z (95% conf. interval)
Mother delivery-baby age (ref: < 20 years old)
   20-34 0.007 0.723 0.093 0.009 0.562 0.929
   >35 0.699 0.096 0.009 0.534 0.915
Mother education (ref. no education) 0.001
   Primary 2.154 0.474 0.000 1.399 3.315
   Secondary 1.782 0.397 0.011 1.151 2.758
   Higher 1.752 0.423 0.020 1.091 2.813
Husband education (ref. no education) 0.007
   Primary 1.053 0.206 0.794 0.717 1.546
   Secondary 1.034 0.205 0.865 0.702 1.524
   Higher 0.982 0.217 0.934 0.637 1.513
Mother occupation (ref. not work) 0.056 0.917 0.051 0.118 0.823 1.022
Husband occupation (ref. not work) 0.839 1.048 0.221 0.823 0.693 1.585
Wanted pregnancy (ref. wanted then) 0.475
  Later 0.879 0.095 0.234 0.711 1.087
  No more 0.905 0.097 0.351 0.734 1.116
ANC visit (ref. not visit) 0.001 0.976 0.008 0.003 0.960 0.991
Complication (ref. no complication) 0.000 1.731 0.124 0.000 1.505 1.992
Random Effect Parameter
  Region 0.210 0.078 0.101 0.434
  Wealth 0.109 0.054 0.041 0.289
Constanta 0.092 0.032 0.000 0.047
Wald chi2(df) 100.19
Probability > Chi2 0.000
LR test vs. logistic regression: chi2(2)=39.37 Prob>chi2=0.000

*=Significant at 0.05; **=Significant at 0.01; ref. =reference.