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Table 3 Incidence Rate Ratio (95% CI) and Absolute excess rate due to interaction (AErI) (95% CI) for death between enrolment to day 180 of life in the intervention and control arm of the ciKMC triala across religion, caste, maternal literacy, infant’s sex, and socioeconomic status

From: Health equity impact of community-initiated kangaroo mother care: a randomized controlled trial

Mortality from enrolment to 180 days
  Control Deaths (child months under observation) ciKMC Deaths (child months under observation) IRR (95% CI) AErI (95% CI) (child-months under observation)
Socio-economic status b
 Poor 102 (8499) 79 (9372) 0.70 (0.56, 0.88) 0.0026 (0.0001, 0.0053)
 Non-poor 81 (12,267) 79 (14,061) 0.85 (0.66, 1.09)
Caste
 SC c/ST c/OBC d 154 (16,234) 127 (18,359) 0.73 (0.53, 1.00) 0.0023 (-0.0016, 0.0061)
 Other 29 (4533) 31 (5074) 0.95 (0.63, 1.45)
Maternal literacy
 Illiterate 89 (7020) 71 (8575) 0.65 (0.52, 0.81) 0.0034 (0.0006, 0.0063)
 Literate 94 (13,746) 87 (14,858) 0.86 (0.65, 1.12)
Infant’s sex
 Female 103 (11,540) 89 (13,527) 0.74 (0.49, 1.10) 0.0006 (-0.0039, 0.0052)
 Male 80 (9226) 69 (9907) 0.80 (0.55, 1.17)
Religion
 Other 45 (3775) 35 (4271) 0.69 (0.49, 0.96) 0.0020 (-0.0021, 0.0062)
 Hindu 138 (16,992) 123 (19,162) 0.79 (0.58, 1.08)
  1. aData for different characteristics were missing for < 30 (0.4%) of the participants.
  2. bLower two wealth quintiles have been categorised as poor and the top three wealth quintiles have been categorised as non-poor.
  3. cScheduled castes (SCs), and scheduled tribes (STs) are officially designated groups of historically disadvantaged people in India.
  4. dOther backward caste (OBC) is a collective term the Government of India uses to classify castes that are educationally or socially disadvantaged.