Neonatal mortality in the neonatal intensive care unit of Debre Markos referral hospital, Northwest Ethiopia: a prospective cohort study

Table 1 Sample size calculation to assess the incidence and predictors of neonatal mortality at Debre Markos Referral Hospital, Northwest Ethiopia, 2018

Variables	Assumptions	Hazard ratio	Total sample size	10% loss to follow-up
Not initiating exclusive breastfeeding	Power = 80% CI = 95 π₁= π₂ = ½	7.5	125	138 [12]
Having neonatal complications	Power = 80% CI = 95 π₁= π₂ = ½	7.1	132	146 [12]

Note: π₁ and π₂: the proportions to be allocated between exposed and non-exposed groups HR: hazard ratio

ISSN: 1471-2431