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. 2021 Oct 13;46(3):405–410. doi: 10.4103/ijcm.IJCM_425_20

Table 2.

Cox regression analysis for neonatal mortality by mother, child, and household factors in southern and northern regions of India (2015-2016)

Background characteristics Southern regions Northern regions


Mother factors Child factors Household factors All factors Mother factors Child factors Household factors All factors








Model 1 Model 2 Model 3 Model 4 Model 1 Model 2 Model 3 Model 4








HR 95% CI HR 95% CI HR 95% CI HR 95% CI HR 95% CI HR 95% CI HR 95% CI HR 95% CI
Mother factors
 Education
  Not educated® 1.00 1.00 1.00 1.00
  Educated 0.57*** 0.44-0.71 0.92 0.63-1.33 0.81*** 0.74-0.87 0.85*** 0.76-0.95
 Occupation
  Not working® 1.00 1.00 1.00 1.00
  Working 1.18 0.80-1.74 1.27 0.76-2.13 0.85 0.67-1.06 0.85 0.65-1.12
 Institutional delivery
  Not institutional® 1.00 1.00 1.00 1.00
  Institutional 1.01 0.67-1.48 1.17 0.68-2.01 1.03 0.94-1.11 1.18*** 1.05-1.31
 Age at first birth (years)
  <20® 1.00 1.00 1.00 1.00
  >20 1.13 0.92-1.37 1.21 0.90-1.61 0.89*** 0.82-0.96 0.92*** 0.82-0.94
Child factors
 Birth interval (years)
  <2® 1.00 1.00 1.00 1.00
  >2 0.69*** 0.51-0.91 0.76** 0.56-1.02 0.60*** 0.54-0.66 0.61*** 0.54-0.67
 Birth size
  Average and larger® 1.00 1.00 1.00 1.00
  Small and very small 4.57*** 3.38-6.16 4.38*** 3.20-5.98 2.30*** 2.06-2.56 2.25*** 2.01-2.51
 Child sex
  Male® 1.00 1.00 1.00 1.00
  Female 0.93 0.69-1.22 0.97 0.72-1.29 0.91** 0.82-1.00 0.91** 0.82-1.01
 Currently breastfeeding
  No® 1.00 1.00 1.00 1.00
  Yes 0.63*** 0.44-0.89 0.60*** 0.41-0.85 0.50*** 0.44-0.55 0.46*** 0.41-0.51
Household factors
 Wealth index
  Poor® 1.00 1.00 1.00 1.00
  Middle 0.85 0.66-1.07 0.94 0.64-1.36 0.90** 0.80-0.99 0.91*** 0.78-0.95
  Rich 0.48*** 0.35-0.66 0.61** 0.37-0.98 0.59*** 0.52-0.66 0.62*** 0.52-0.73
 Type of residence
  Urban® 1.00 1.00 1.00 1.00
  Rural 1.09 0.85-1.38 0.99 0.70-1.40 1.04 0.93-1.16 1.01 0.87-1.15
 Toilet facility
  No facility® 1.00 1.00 1.00 1.00
  Facility 0.94 0.73-1.19 1.01 0.69-1.47 0.98 0.88-1.08 0.96 0.84-1.09
 Caste
  SC/ST® 1.00 1.00 1.00 1.00
  OBC 0.80** 0.64-0.98 0.93 0.67-1.27 1.09** 0.99-1.19 1.09 0.97-1.22
  General 0.94 0.65-1.35 1.07 0.62-1.83 0.91 0.81-1.02 0.78*** 0.70-0.87
 Religion
  Hindu® 1.00 1.00 1.00 1.00
  Muslim and others 0.88 0.65-1.19 0.88 0.57-1.36 1.01 0.92-1.10 0.96 0.85-1.08

P<0.10; **P<0.05; ***P<0.01; ®Reference category. HR: Hazard ratio, CI: Confidence interval