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Table 3 Comparison of incidence rate ratios (IRRs) of morbidities for 4 months between the MNP supplementation groups and children without MNP supplementation

From: Effect of micronutrient powder supplementation for two and four months on hemoglobin level of children 6–23 months old in a slum in Dhaka: a community based observational study

Multiple micronutrient powder Diarrhea ALRI Cough Fever
IRR (95 % CI) p-value IRR (95 % CI) p-value IRR (95 % CI) p-value IRR (95 % CI) p-value
Age 6–11 months         
 Nonea Ref   Ref   Ref   Ref  
 2 Months 1.28 (1.08, 1.51) 0.004 2.22 (1.30, 3.80) 0.003 1.08 (0.97, 1.21) 0.175 1.04 (0.92, 1.17) 0.561
 4 Months 1.26 (1.08, 1.46) 0.003 0.94 (0.52, 1.69) 0.839 1.11 (1.01, 1.23) 0.040 1.03 (0.92, 1.15) 0.586
Age 12–17 months         
 Nonea Ref   Ref   Ref   Ref  
 2 Months 1.00 (081, 1.22) 0.978 1.75 (1.15, 2.64) 0.008 1.05 (0.92, 1.19) 0.485 0.97 (0.84, 1.12) 0.691
 4 Months 0.94 (0.76, 1.17) 0.579 0.62 (0.35, 1.09) 0.098 0.98 (0.85, 1.11) 0.750 0.95 (0.81, 1.10) 0.482
Age 18–24 months         
 Nonea Ref   Ref   Ref   Ref  
 2 Months 0.81 (0.61, 1.01) 0.062 4.20 (2.32, 7.62) 0.000 0.92 (0.80, 1.07) 0.273 0.87 (0.75, 1.01) 0.075
 4 Months 0.83 (0.65, 1.07) 0.149 0.76 (0.28, 2.08) 0.598 0.83 (0.70, 0.98) 0.024 0.70 (0.58, 0.84) 0.000
  1. IRR estimated with generalized linear models with a Poisson distribution. IRR means incidence rate ratio. All are adjusted by gender, stunting, underweight wasting and food security status
  2. aNone: Morbidity surveillance data from MAL-ED birth cohort children (n = 213) without MNP supplementation from the same age group