Incidence rate to birth weight and number of follow-up days among low birthweight neonates in Northwest Ethiopia CSH from 19 September 2021 to 1 January 2023) (N=405)
| Variables | Category | RDS | Rate with (95% CI) per 100 |
| Birth weight | ELBW | 15 | 25.39 (15.55 to 41.45) |
| VLBW | 60 | 98 (14.74 to 24.45) | |
| LBW | 118 | 8.26 (6.88 to 9.18) | |
| No of follow-up days | 1 day | 30 | 52.63 (36.80 to 75.27) |
| 2 days | 31 | 26.72 (18.79 to 38.00) | |
| 3 days | 23 | 16.66 (11.07 to 25.08) | |
| 4 days | 18 | 10.63 (6.60 to 17.09) | |
| 5 days | 19 | 9.5 (6.05 to 14.89) | |
| 6 days | 23 | 7.99 (53.07 to 12.01) | |
| 7 days | 48 | 5.91 (4.45 to 7.84) | |
| Total incidence density | 10.78 (9.35 to 12.42). |
CSH, Comprehensive Specialised Hospital; ELBW, extremely low birth weight ; LBW, low birth weight; RDS, respiratory distress syndrome; VLBW, very low birth weight.