Reference | Cohort birth period | Exclusions (details in text) | Geographical cohort | Antenatal steroids | Postnatal surfactant | Age at survival | Proportion of live births surviving for each week of gestation (%) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
23 | 24 | 25 | 26 | 27 | |||||||||||
Martens37 | 1991–1996 | No | No | No | No | neo | 57 | 62 | 72 | ||||||
Emsley38 | 1990–1994 | No | No | Yes (23%) | Yes (54%) | dis | 54 | ||||||||
Bohin39 | 1991–1993 | Yes | Yes | No | No | dis | 3 | 28 | 37 | 55 | 71 | ||||
Hussain40 | Aug 89–Jul 93 | No | No | No | Yes4-150 | dis | 27 | 57 | 64 | 87 | 87 | ||||
Wilson41 | Apr 90–Apr 92 | No | No | Yes4-150 | Yes4-150 | dis | 0 | 42 | 56 | 59 | 92 | ||||
Cooper42 | Jul 86–Dec 93 | No | No | Yes (20%) | Yes4-150 | dis | 27 | 51 | 67 | 66 | 66 | ||||
Holmsgaard43 | Jan 87–Dec 90 | Yes | No | Yes4-150 | Yes4-150 | 2 y | 54 | 67 | 71 | 86 | |||||
Nishida44 | Oct 84–Dec 91 | No | No | No | No | neo | 43 | 94 | 85 | 84 | 90 | ||||
Wood45 | Jan 86–Apr 88 | No | No | No | No | dis | 10 | 43 | 80 | 83 | |||||
Emsley38 | 1984–1989 | No | No | No | No | dis | 33 | ||||||||
Ruys46 | 1985–1987 | No | No | No | No | dis | 75 | 50 | 60 | 46 | |||||
Eg-Andersen47 | 1984–1987 | No | No | No | No | dis | 0 | 88 | 44 | 63 | |||||
Cooke48 | 1980–1989 | No | No | No | No | dis | 14 | 43 | 44 | 64 | |||||
Lamont49 | Aug 79–Jun 82 | Yes | No | No | No | dis | 11 | 55 | |||||||
Marlow50 | 1976–1980 | Yes | No | No | No | dis | 0 | 31 | 45 | 66 | 78 | ||||
Philip51 | 1976–1979 | No | No | No | No | dis | 11 | 36 | 47 | ||||||
Combined estimate | 20 | 42 | 52 | 62 | 71 | ||||||||||
(95% CI) | (15–26) | (38–46) | (48–55) | (59–65) | (69–74) |
↵4-150 Percentage not specified.
dis, discharge from hospital; neo, neonatal period (28 days); 2 y, 2 years of age.