Munkhuu 2013.

Study characteristics
Methods	Design: prospective cohort Unit of randomization: baby
Participants	Location/Setting: single centre (maternity hospital); Mongolia Sample size: 8356 Number of withdrawals/dropouts: 364 in control group Sex: 4089 girls (49%) Mean age: 1.9 (SD 4.9) days Graf: IIc‐IV dysplastic DDH (100/8356; 1.2%); IIa normal immature (1146/8356; 13.7%). 99/100 received splint (Graf IIc‐IV) Inclusion criteria: all newborns Exclusion criteria: congenital malformations; babies with type 1 hips were discharged
Interventions	Intervention (sample size): type IIc‐IV — Tubingen hip flexion splint (n = 99 babies) Control (sample size): type IIa — ultrasound follow‐up (n = 1137 babies)
Outcomes	Primary outcome(s): description of hips Secondary outcome(s): treatment related complications Timing of outcome assessment: The median time interval between baseline and the first, second and third follow‐up visit was 33, 64 and 95 days, respectively.
Notes	Study start date: 2010 Study end date: 2011 Funding source: funding came from the supporters of Swiss Association of Pediatric Ultrasound (SVUPP) for sponsoring the ultrasound device (www.svupp.ch), and the group medical practice in Solothurn for sponsoring the fixating unit (www.gruprax.ch). Conflicts of interest: the authors have declared that no competing interests exist. Comment(s): none