|
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
|
- Rates are expressed per 1,000 live births
- CA denotes congenital anomalies and Imm-rel denotes immaturity-related causes of infant death
- aNorway data for all BW and GA categories is from 1996–2005
- All calculations exclude live births with unknown birth weight and unknown gestational age
- ICD-10 codes used for CA: Q00-Q99
- ICD-10 codes used for Immaturity-related conditions: D58.9, P01.3–P01.5, P01.8–P01.9, P02.7, P05.0–P05.9, P07.0–P07.3, P10.2, P22.0–P22.9, P25.0–P25.8, P26.0–P26.9, P27.0–P27.9, P28.0–P28.9, P29.0-29.2, P29.4–P29.9, P52.0–P52.3, P57.8–P57.9, P58.0-P58.9, P59.0–P59.9, P77, P78.0, P80.0, P91.1–P91.2, P91.8, P94.1–P94.9, P96.0, P96.3–P96.5
- ICD-10 codes used for other conditions: rest of A000 - Y899
