prediction value of crib-ii in outcome of preterm and low birth weight infants: a prospective cohort study

background: one of the most common methods of identifying mortality risk is the clinical risk index for babies scoring system (crib- ii). the aim of this study was assessing the value of crib- ii in predicting mortality risk in preterm and low birth weight infants in east azerbaijan- iran. materials and methods: this prospective cohort study was carried out in 2013-2014 during 6 months in nicus of alzahra, taleqani and children hospitals of tabriz-iran. all infants ≤ 32 weeks’ gestational age or ≤ 1500gr birth weight were included in the study using consecutive method. after calculating crib- ii score, the infants were followed up at 3 months of age and their outcome was determined. the data was analyzed using spss-13, t- test, receiver operating characteristics (roc) and area under curve (auc) and relative risk (rr). results: of total 215 infants, 64 infants (29.7%) died in the hospital and one infant (0.4%) died after discharging from the hospital. 150 (68.8%) infants, were alive at 3 months age follow up. the mean of crib- ii score in the group of dead infants was higher and statistically significant compared to the group of alive infants (p<0.05). the prediction power of crib- ii was determined at 8.5 cut off point regarding the outcome of infants. based on auc, the crib- ii score predicted 83% of mortality rate in infants (confidence interval =76-90). conclusion: findings indicated the notable power of crib- ii in predicting infants’ mortality, so it can be used as a simple and reliable tool to prioritize the interventions in newborn intensive care units (nicus).