| Methods |
Randomised controlled trial conducted in a USA hospital setting. |
| Participants |
38 women participated in this trial, 17 in the intervention group and 21 in the control group. Inclusion criteria: "patients interested in childbirth preparatory courses". |
| Interventions |
Intervention group received hypnobirthing course while the control group received standard childbirth preparation course. |
| Outcomes |
"Coping skills" "route of delivery; birthweight, Apgar scores; intrapartum and postpartum epidural and analgesic use." |
| Notes |
This is an abstract of poster presentation and so information was very limited. Principal investigator contacted on 17/1/12 seeking further information about methodology and outcome data no reply to date ‐ September 2015. |
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Random sequence generation (selection bias) |
Unclear risk |
Described as randomised – no further details. |
| Allocation concealment (selection bias) |
Unclear risk |
Not described. |
| Blinding of participants (objective outcomes) |
Low risk |
Not reported, but lack of blinding unlikely to have an impact. |
| Blinding of participants (subjective outcomes) |
Unclear risk |
Not reported. |
| Blinding of personnel (performance bias) |
Unclear risk |
Not reported. |
| Blinding of outcome assessment (detection bias)
All outcomes |
Unclear risk |
Not reported. |
| Incomplete outcome data (attrition bias)
All outcomes |
Unclear risk |
Not reported. |
| Selective reporting (reporting bias) |
Unclear risk |
Only an abstract and so word limit on reporting of data – no numerical data reported. |
| Other bias |
Low risk |
Abstract reports that the "The groups were similar with respect to age, parity, and gestational age at course enrollment". |
