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. 1998 Oct 26;1998(4):CD000935. doi: 10.1002/14651858.CD000935

Bonovich 1990.

Methods Method of randomisation is unclear: 'study numbers were sequentially assigned and used to randomise subjects to the experimental or control group'.
Participants 245 nulliparous women > 16 years of age at 30+ weeks' gestation who were able to communicate effectively in English, at a single US hospital‐based outpatient obstetrical clinic. 37 (15%) were lost to follow up, due to incomplete hospital records or admission to hospital for complications before the onset of normal full‐term labour.
Interventions When participants had reached 37 weeks' gestation, interviews were conducted with the investigator to determine knowledge gained from family and friends regarding labour onset. Correct information was positively reinforced. Specific teaching re: palpation of uterine fundus, differentiation between Braxton‐Hicks and active labour contractions, timing of contractions, recognition of amniotic fluid, and pain perception. Teaching was reinforced at subsequent weekly antenatal visits.
Outcomes Mean number of visits to labour suite before onset of active labour (i.e. discharged undelivered).
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment (selection bias) Unclear risk B ‐ Unclear