Recommended data to be included when reporting preterm cohort studies
| Cohort characteristics |
| • Institution or geographical area |
| • Time period of birth cohort |
| • Maternal sociodemographic details |
| • Ethnic characteristics |
| Clear recording of all previous publications (including abstracts) relating to cohort |
| Coexistent perinatal therapies |
| • Antenatal steroid uptake |
| • Postnatal surfactant usage |
| Reporting of outcome |
| • Report outcome of all pregnancies (terminations, miscarriages, stillbirths, live births) |
| • Outcome reported in one week gestational age bands |
| • Report survival to a standardised age—for example, expected date of delivery |
| • Initially report outcomes including all congenital malformations included then report separate subgroup analysis excluding congenital malformations |