| Paper | Date of Cohort | Location of Cohort | Type of Cohort | Sample Size | Currency | Currency Date |
|---|---|---|---|---|---|---|
| Adams (13) | 1996 | US | Convenience sample | Total: 12,125Normal preterm: 456Extreme preterm: 513Normal full term: 9,179 | USD | Not specified |
| Brazier (14) | Not specified | UK | Hospital-specific | 38 | UK pounds | Not specified |
| Chollet (15) | 1989-1991 | US | Convenience sample | Total: 58,904Normal preterm: 946Extreme preterm: 986Normal full term: 44,041 | USD | Not specified |
| Doyle (16) | 1997 | Australia | Geographic (state) | 233 | Australian dollar | 1997 |
| Giacoia (17) | 1983-1984 | US | Hospital-specific | 167 | USD | Not specified |
| Gilbert (18) | 1996 | California | Geographic (state) | 25-38 weeks: 147,224500-3000 grams: 458,366 | USD | Not specified |
| Kilpatrick (19) | 1990-1994 | California | Hospital-specific | 138 | USD | Not specified |
| Luke (20) | 1991-1992 | Illinois | Hospital-specific | Twins: 111Singletons: 106 | USD | Not specified |
| Marbella (21) | 1989-1994 | Wisconsin | Geographic (state) | Premature: 26,668Full term: 368,955 | USD | Not specified |
| McLoughlin (22) | Not specified | UK | Hospital-specific | 109 | UK pounds | Not specified |
| Rogowski (23) | 1993-1994 | US | 25self-selected hospitals | 3,288 | USD | 1994 |
| Rogowski (24) | 1997-1998 | US | 29 hospitals in QI collaborative | 6,797 | USD | 1998 |
| Schmitt (25) | 2000 | California | Geographic (state) | 518,697 | USD | 2003 |
| St John (26) | 1989-1992 | Alabama | Hospital-specific | 958 | USD | Not specified |
| Tommiska (27) | 1996-1997 | Finland | Geographic (regional hospital) | <1000 g: 105 | Euro | 1997 |
| Victorian Infant Collaborative Study Group (12) | 1991-1992 | Australia | Geographic (state) | 429 | Australian dollar | 1992 |
From: D, A Systematic Review of Costs Associated with Preterm Birth
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