Cause of death by gestational week at birth and birth weight for GA percentile among term, non-malformed infants
| Infant mortality | ||||
| Gestational week or birth weight for GA percentile | Mortality number | Rate/1000 live births | Crude | Adjusted model 1 |
| OR (95% CI) | OR (95% CI) | |||
| Asphyxia (n=238) | ||||
| 37 | 12 | 0.12 | 1.43 (0.76 to 2.67) | 1.36 (0.72 to 2.55) |
| 38 | 14 | 0.06 | 0.68 (0.38 to 1.22) | 0.66 (0.37 to 1.19) |
| 39 | 31 | 0.07 | 0.81 (0.52 to 1.26) | 0.80 (0.51 to 1.25) |
| 40 | 51 | 0.09 | 1.00 (Reference) | 1.00 (Reference) |
| 41 | 61 | 0.14 | 1.58 (1.09 to 2.29) | 1.58 (1.10 to 2.29) |
| ≥42 | 69 | 0.22 | 2.59 (1.81 to 3.72) | 2.58 (1.79 to 3.71) |
| <3 | 10 | 0.73 | 1.53 (0.80 to 2.93) | 1.47 (0.77 to 2.80) |
| 3–<10 | 23 | 0.15 | 1.46 (0.93 to 2.28) | 1.39 (0.89 to 2.18) |
| 10–<25 | 29 | 0.09 | 0.87 (0.58 to 1.30) | 0.84 (0.56 to 1.27) |
| 25–75 | 112 | 0.10 | 1.00 (Reference) | 1.00 (Reference) |
| >75–90 | 29 | 0.09 | 0.87 (0.58 to 1.30) | 0.89 (0.59 to 1.33) |
| >90–97 | 16 | 0.11 | 1.02 (0.61 to 1.73) | 1.06 (0.63 to 1.79) |
| >97 | 19 | 0.30 | 2.88 (1.77 to 4.69) | 3.09 (1.89 to 5.03) |
| Neonatal respiratory disorders (n=87) | ||||
| 37 | 5 | 0.05 | 1.38 (0.52 to 3.64) | 1.33 (0.50 to 3.53) |
| 38 | 7 | 0.03 | 0.79 (0.34 to 1.84) | 0.80 (0.34 to 1.88) |
| 39 | 6 | 0.01 | 0.36 (0.15 to 0.89) | 0.37 (0.15 to 0.91) |
| 40 | 22 | 0.04 | 1.00 (Reference) | 1.00 (Reference) |
| 41 | 22 | 0.05 | 1.32 (0.73 to 2.38) | 1.28 (0.71 to 2.31) |
| ≥42 | 25 | 0.08 | 2.18 (1.23 to 3.86) | 1.92 (1.08 to 3.42) |
| <3 | 11 | 0.37 | 4.61 (2.37 to 8.96) | 4.10 (2.10 to 8.01) |
| 3–<10 | 16 | 0.11 | 2.77 (1.55 to 4.93) | 2.55 (1.43 to 4.54) |
| 10–<25 | 12 | 0.04 | 0.98 (0.52 to 1.86) | 0.94 (0.49 to 1.78) |
| 25–75 | 41 | 0.04 | 1.00 (Reference) | 1.00 (Reference) |
| >75–90 | 2 | 0.01 | 0.16 (0.04 to 0.67) | 0.17 (0.04 to 0.70) |
| >90–97 | 5 | 0.03 | 0.87 (0.35 to 2.21) | 0.92 (0.36 to 2.34) |
| >97 | 0 | 0 | – | – |
| Infections (n=317) | ||||
| 37 | 35 | 0.36 | 3.37 (2.23 to 5.09) | 3.34 (2.21 to 5.05) |
| 38 | 55 | 0.23 | 2.16 (1.50 to 3.09) | 2.18 (1.52 to 3.14) |
| 39 | 51 | 0.11 | 1.08 (0.74 to 1.56) | 1.08 (0.75 to 1.56) |
| 40 | 63 | 0.11 | 1.00 (Reference) | 1.00 (Reference) |
| 41 | 62 | 0.14 | 1.30 (0.92 to 1.84) | 1.29 (0.91 to 1.84) |
| ≥42 | 51 | 0.16 | 1.55 (1.07 to 2.24) | 1.49 (1.03 to 2.16) |
| <3 | 25 | 0.39 | 2.67 (1.75 to 4.06) | 2.39 (1.57 to 3.65) |
| 3–<10 | 27 | 0.18 | 1.19 (0.79 to 1.79) | 1.15 (0.77 to 1.74) |
| 10–<25 | 43 | 0.13 | 0.89 (0.64 to 1.25) | 0.89 (0.63 to 1.24) |
| 25–75 | 161 | 0.15 | 1.00 (Reference) | 1.00 (Reference) |
| >75–90 | 34 | 0.11 | 0.71 (0.49 to 1.02) | 0.70 (0.49 to 1.02) |
| >90–97 | 21 | 0.14 | 0.93 (0.59 to 1.47) | 0.92 (0.58 to 1.45) |
| >97 | 6 | 0.09 | 0.63 (0.28 to 1.43) | 0.60 (0.27 to 1.36) |
| Cardiovascular disorders (n=95) | ||||
| 37 | 10 | 0.10 | 2.89 (1.36 to 6.13) | 2.80 (1.32 to 5.96) |
| 38 | 9 | 0.04 | 1.06 (0.49 to 2.31) | 1.07 (0.49 to 2.34) |
| 39 | 23 | 0.05 | 1.46 (0.81 to 2.63) | 1.47 (0.81 to 2.65) |
| 40 | 21 | 0.04 | 1.00 (Reference) | 1.00 (Reference) |
| 41 | 15 | 0.03 | 0.94 (0.49 to 1.83) | 0.92 (0.48 to 1.79) |
| ≥42 | 17 | 0.05 | 1.55 (0.82 to 2.94) | 1.42 (0.75 to 2.70) |
| <3 | 11 | 0.17 | 4.50 (2.32 to 8.73) | 4.21 (2.16 to 8.20) |
| 3–<10 | 10 | 0.07 | 1.69 (0.85 to 3.37) | 1.67 (0.84 to 3.34) |
| 10–<25 | 16 | 0.05 | 1.28 (0.72 to 2.27) | 1.27 (0.72 to 2.27) |
| 25–75 | 42 | 0.04 | 1.00 (Reference) | 1.00 (Reference) |
| >75–90 | 10 | 0.03 | 0.80 (0.40 to 1.59) | 0.79 (0.40 to 1.58) |
| >90–97 | 5 | 0.03 | 0.85 (0.34 to 2.15) | 0.84 (0.33 to 2.12 |
| >97 | 1 | 0.02 | 0.40 (0.06 to 2.94) | 0.39 (0.05 to 2.81) |
| SIDS (n=1107) | ||||
| 37 | 90 | 0.92 | 1.87 (1.48 to 2.37) | 1.86 (1.47 to 2.35) |
| 38 | 171 | 0.71 | 1.45 (1.20 to 1.75) | 1.47 (1.21 to 1.77) |
| 39 | 235 | 0.52 | 1.07 (0.90 to 1.27) | 1.07 (0.91 to 1.28) |
| 40 | 292 | 0.49 | 1.00 (Reference) | 1.00 (Reference) |
| 41 | 194 | 0.43 | 0.88 (0.73 to 1.05) | 0.87 (0.73 to 1.05) |
| ≥42 | 125 | 0.40 | 0.82 (0.67 to 1.01) | 0.79 (0.64 to 0.97) |
| <3 | 79 | 1.22 | 2.61 (2.06 to 3.31) | 2.40 (1.89 to 3.04) |
| 3–<10 | 107 | 0.71 | 1.46 (1.19 to 1.80) | 1.43 (1.16 to 1.76) |
| 10–<25 | 178 | 0.55 | 1.15 (0.97 to 1.36) | 1.14 (0.96 to 1.35) |
| 25–75 | 519 | 0.48 | 1.00 (Reference) | 1.00 (Reference) |
| >75–90 | 147 | 0.46 | 0.95 (0.79 to 1.14) | 0.95 (0.79 to 1.14) |
| >90–97 | 51 | 0.34 | 0.70 (0.53 to 0.94) | 0.70 (0.53 to 0.94) |
| >97 | 26 | 0.41 | 0.85 (0.57 to 1.26) | 0.84 (0.57 to 1.24) |
| Neuromuscular disorders (n=143) | ||||
| 37 | 9 | 0.09 | 1.65 (0.79 to 3.45) | 1.61 (0.77 to 3.36) |
| 38 | 18 | 0.07 | 1.35 (0.76 to 2.39) | 1.36 (0.76 to 2.41) |
| 39 | 33 | 0.07 | 1.33 (0.82 to 2.15) | 1.34 (0.83 to 2.17) |
| 40 | 33 | 0.06 | 1.00 (Reference) | 1.00 (Reference) |
| 41 | 31 | 0.07 | 1.24 (0.76 to 2.02) | 1.22 (0.75 to 1.99) |
| ≥42 | 19 | 0.06 | 1.10 (0.63 to 1.94) | 1.02 (0.58 to 1.80) |
| <3 | 15 | 0.31 | 3.84 (2.20 to 6.73) | 3.72 (2.12 to 6.53) |
| 3–<10 | 13 | 0.09 | 1.38 (0.76 to 2.49) | 1.37 (0.75 to 2.48) |
| 10–<25 | 26 | 0.08 | 1.30 (0.83 to 2.04) | 1.30 (0.82 to 2.04) |
| 25–75 | 67 | 0.06 | 1.00 (Reference) | 1.00 (Reference) |
| >75–90 | 16 | 0.05 | 0.80 (0.46 to 1.38) | 0.80 (0.46 to 1.38) |
| >90–97 | 3 | 0.02 | 0.32 (0.10 to 1.02) | 0.32 (0.10 to 1.02) |
| >97 | 3 | 0.05 | 0.76 (0.24 to 2.42) | 0.75 (0.24 to 2.40) |
| Malignant neoplasms (n=56) | ||||
| 37 | 5 | 0.05 | 3.37 (1.13 to 10.05) | 3.26 (1.09 to 9.75) |
| 38 | 7 | 0.03 | 1.92 (0.72 to 5.16) | 1.85 (0.69 to 4.98) |
| 39 | 17 | 0.04 | 2.51 (1.12 to 5.63) | 2.46 (1.10 to 5.53) |
| 40 | 9 | 0.02 | 1.00 (Reference) | 1.00 (Reference) |
| 41 | 9 | 0.02 | 1.32 (0.52 to 3.33) | 1.36 (0.54 to 3.43) |
| ≥42 | 9 | 0.03 | 1.92 (0.76 to 4.83) | 2.05 (0.81 to 5.16) |
| <3 | 0 | 0 | – | – |
| 3–<10 | 4 | 0.03 | 1.23 (0.43 to 3.57) | 1.19 (0.41 to 3.45) |
| 10–<25 | 6 | 0.02 | 0.87 (0.36 to 2.14) | 0.86 (0.35 to 2.12) |
| 25–75 | 23 | 0.02 | 1.00 (Reference) | 1.00 (Reference) |
| >75–90 | 14 | 0.04 | 2.03 (1.05 to 3.95) | 2.03 (1.05 to 3.95) |
| >90–97 | 4 | 0.03 | 1.25 (0.43 to 3.60) | 1.23 (0.43 to 3.57) |
| >97 | 5 | 0.08 | 3.69 (1.40 to 9.71) | 3.58 (1.36 to 9.46) |
| External causes of death (n=96) | ||||
| 37 | 6 | 0.06 | 1.58 (0.64 to 3.88) | 1.56 (0.63 to 3.83) |
| 38 | 13 | 0.05 | 1.40 (0.71 to 2.75) | 1.40 (0.71 to 2.78) |
| 39 | 24 | 0.05 | 1.39 (0.78 to 2.46) | 1.39 (0.79 to 2.46) |
| 40 | 23 | 0.04 | 1.00 (Reference) | 1.00 (Reference) |
| 41 | 18 | 0.04 | 1.03 (0.56 to 1.91) | 1.03 (0.56 to 1.91) |
| ≥42 | 12 | 0.04 | 1.00 (0.50 to 2.01) | 0.97 (0.48 to 1.95) |
| <3 | 6 | 0.11 | 2.19 (0.94 to 5.13) | 2.10 (0.90 to 4.92) |
| 3–<10 | 9 | 0.06 | 1.36 (0.67 to 2.77) | 1.35 (0.66 to 2.75) |
| 10–<25 | 14 | 0.04 | 1.00 (0.55 to 1.81) | 0.99 (0.55 to 1.81) |
| 25–75 | 47 | 0.04 | 1.00 (Reference) | 1.00 (Reference) |
| >75–90 | 14 | 0.04 | 1.00 (0.55 to 1.81) | 0.99 (0.55 to 1.80) |
| >90–97 | 2 | 0.01 | 0.31 (0.07 to 1.25) | 0.30 (0.07 to 1.25) |
| >97 | 4 | 0.06 | 1.45 (0.52 to 4.01) | 1.42 (0.51 to 3.95) |
| Other causes of death (n=568) | ||||
| 37 | 62 | 0.63 | 2.87 (2.12 to 3.88) | 2.75 (2.03 to 3.72) |
| 38 | 78 | 0.32 | 1.47 (1.11 to 1.95) | 1.45 (1.10 to 1.92) |
| 39 | 112 | 0.25 | 1.14 (0.88 to 1.46) | 1.14 (0.88 to 1.46) |
| 40 | 131 | 0.22 | 1.00 (Reference) | 1.00 (Reference) |
| 41 | 106 | 0.23 | 1.07 (0.83 to 1.38) | 1.06 (0.82 to 1.36) |
| ≥42 | 79 | 0.25 | 1.16 (0.87 to 1.53) | 1.08 (0.82 to 1.43) |
| <3 | 48 | 1.55 | 3.59 (2.63 to 4.89) | 3.30 (2.41 to 4.50) |
| 3–<10 | 74 | 0.49 | 2.28 (1.76 to 2.97) | 2.23 (1.71 to 2.90) |
| 10–<25 | 90 | 0.28 | 1.31 (1.03 to 1.67) | 1.30 (1.02 to 1.66) |
| 25–75 | 230 | 0.21 | 1.00 (Reference) | 1.00 (Reference) |
| >75–90 | 71 | 0.22 | 1.03 (0.79 to 1.35) | 1.03 (0.79 to 1.35) |
| >90–97 | 39 | 0.26 | 1.21 (0.86 to 1.70) | 1.20 (0.85 to 1.69) |
| >97 | 16 | 0.25 | 1.18 (0.71 to 1.96) | 1.13 (0.68 to 1.88) |
Model 1 adjusts for year of birth and birth weight SD percentile or gestational week.
SIDS, sudden infant death syndrome.