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 | |||||||||||
Batton15 | 1994–1997 | No | No | Yes (64%) | Yes (81%) | dis | 57 | 74 | 85 | ||||||
Bahado-Singh16 | 1990–1995 | Yes | No | Yes3-150 | Yes3-150 | dis | 41 | 68 | 75 | ||||||
Doyle17 | 1991–1992 | No | Yes | No | No | 2 y | 10 | 33 | 58 | 72 | 77 | ||||
Gultom18 | 1989–1994 | Yes | No | No | No | dis | 5 | 35 | 57 | 79 | 85 | ||||
Hack19 | 1990–1992 | No | No | Yes (40%) | Yes (10%) | 20 m | 7 | 40 | 63 | 77 | 83 | ||||
Katz20 | Jul 89–Aug 91 | Yes | No | No | No | dis | 45 | 64 | 72 | 89 | |||||
Holtrop21 | Jan 88–Dec 91 | No | No | No | No | dis | 19 | 59 | 59 | ||||||
Magowan22 | 1985–1994 | No | Yes | No | No | neo | 21 | 48 | 60 | 70 | |||||
Ferrara23 | 1986–1990 | No | No | No | Yes (50%) | dis | 44 | 44 | 70 | 78 | |||||
Philip24 | 1982–1991 | No | No | No | No | dis | 65 | 80 | |||||||
Gultom18 | 1983–1988 | Yes | No | No | No | dis | 0 | 0 | 35 | 57 | 72 | ||||
Johnson25 | 1984–1986 | No | Yes | No | No | dis | 22 | 48 | 62 | ||||||
Hack26 | Jul 82–Jun 88 | No | No | No | No | dis | 8 | 16 | 53 | 63 | 72 | ||||
Whyte27 | Jan 82–Jun 87 | Yes | No | Yes3-150 | No | dis | 25 | 47 | 65 | 74 | |||||
Van Zeben28 | 1983 | No | Yes | No | No | dis | 0 | 15 | 38 | 54 | |||||
Gilstrap29 | Jul 79–Mar 84 | Yes | No | Yes3-150 | No | dis | 0 | 50 | 29 | 67 | 100 | ||||
Nwaesei30 | 1980–1982 | Yes | No | Yes3-150 | No | dis | 0 | 10 | 38 | 46 | 76 | ||||
Kitchen31 | Oct 80–Mar 82 | No | No | No | No | 8 y | 10 | 14 | 42 | 55 | |||||
Yu32 | 1977–1984 | No | No | No | No | 1 y | 7 | 33 | 25 | 56 | 72 | ||||
Milligan33 | 1979–1982 | No | No | No | No | dis | 14 | 39 | 64 | 76 | 75 | ||||
Kitchen34 | Jan 77–Mar 82 | No | No | Yes3-150 | No | dis | 7 | 20 | 45 | 55 | |||||
Herschel35 | 1977–1980 | Yes | No | Yes3-150 | No | dis | 29 | 11 | 45 | 61 | |||||
Kitchen36 | 1977–1978 | No | No | No | No | dis | 9 | 17 | 50 | 73 | |||||
Combined estimate | 18 | 33 | 50 | 63 | 72 | ||||||||||
(95% CI) | (14–21) | (30–36) | (48–53) | (61–65) | (66–74) |
↵3-150 Percentage not specified.
2 y, 2 years of age; neo, neonatal period (28 days); dis, discharge from hospital; 20 m, 20 months of age.