| Bibliography | RoB Tier | Study design | Study name | Endpoint assessed | Additional comments |
|---|---|---|---|---|---|
| Bainbridge et al. ( 1996 ) | 2 | RCT | n/a | Night time sleep duration | |
| Perkin et al. ( 2018 ) | 2 | RCT | Enquiring About Tolerance (EAT) |
Night time sleep duration Night wakings Sleep problems |
|
| Heinig et al. ( 1993 ) | 3 | PC | Davis Area Research on Lactation, Infant Nutrition and Growth (DARLING) | Sleep time (unspecified) | |
| Morgan et al. ( 2004 ) | 3 | PA | n/a | Night time sleep duration | |
| Nevarez et al. ( 2010 ) | 3 | PC | Project Viva | 24‐h sleep duration |
n/a: not applicable; PA: pooled analysis; PC: prospective cohort study; RCT: randomised controlled trial; RoB: risk of bias.