Gestational age (weeks)/Birth weight (grams) | Canada | USA | Denmark | Finland | Norwaya | Sweden | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CA | Imm-rel | Other | CA | Imm-rel | Other | CA | Imm-rel | Other | CA | Imm-rel | Other | CA | Imm-rel | Other | CA | Imm-rel | Other | ||
GA | ≥22 | 1.32 | 1.12 | 2.19 | 1.40 | 1.66 | 2.93 | 1.41 | 1.07 | 1.54 | 1.27 | 0.98 | 1.30 | 1.11 | 0.39 | 1.92 | 1.16 | 0.51 | 1.62 |
≥28 | 1.16 | 0.20 | 1.65 | 1.27 | 0.27 | 2.25 | 1.37 | 0.32 | 1.37 | 1.24 | 0.20 | 1.07 | 1.08 | 0.11 | 1.32 | 1.11 | 0.13 | 1.27 | |
≥32 | 1.04 | 0.10 | 1.52 | 1.14 | 0.14 | 2.04 | 1.29 | 0.16 | 1.30 | 1.14 | 0.09 | 0.98 | 0.99 | 0.05 | 1.15 | 1.00 | 0.06 | 1.12 | |
≥37 | 0.72 | 0.06 | 1.30 | 0.80 | 0.08 | 1.73 | 1.05 | 0.10 | 1.13 | 0.81 | 0.04 | 0.82 | 0.69 | 0.04 | 1.00 | 0.67 | 0.03 | 0.93 | |
BW | ≥500 | 1.30 | 0.94 | 2.07 | 1.39 | 1.32 | 2.82 | 1.42 | 0.96 | 1.48 | 1.26 | 0.82 | 1.24 | 1.09 | 0.33 | 1.81 | 1.04 | 0.42 | 1.48 |
≥1,000 | 1.15 | 0.19 | 1.67 | 1.26 | 0.25 | 2.24 | 1.37 | 0.30 | 1.34 | 1.21 | 0.18 | 1.06 | 1.04 | 0.11 | 1.32 | 0.98 | 0.12 | 1.21 | |
≥1,500 | 1.03 | 0.11 | 1.54 | 1.11 | 0.15 | 2.09 | 1.24 | 0.13 | 1.26 | 1.09 | 0.10 | 1.00 | 0.93 | 0.06 | 1.18 | 0.87 | 0.07 | 1.08 | |
All live births | 1.42 | 1.41 | 2.40 | 1.45 | 2.14 | 3.11 | 1.42 | 1.11 | 1.53 | 1.26 | 0.98 | 1.28 | 1.10 | 0.41 | 1.99 | 1.04 | 0.49 | 1.53 |