Hoddinott 2012.

Methods	Pilot RCT, 2 arms with individual randomisation.
Participants	Setting: 69 women admitted to a maternity hospital in Scotland between July and October 2010. Inclusion criteria: women living in the 3 most disadvantaged postcode areas served by the hospital and giving the baby some breast milk at hospital discharge. Exclusion criteria: women under 16 or with serious medical or psychiatric problems or insufficient English to communicate by telephone.
Interventions	Intervention group: (35 women) proactive phone calls from hospital discharge up to 14 days by a member of the feeding team. The median number of calls per women was 8 calls and the median length was 3 minutes. The calls were to provide support. Women could also initiate calls themselves. Control group: (34 women) reactive phone calls made by women up to 14 days pp. Only 1 woman called for advice.
Outcomes	Breastfeeding or exclusive breastfeeding at 6‐8 weeks. Satisfaction with care. Cost of intervention and service utilisation.
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Randomisation by Internet randomisation sequence service set up by an independent  statistician. Stratified by parity.
Allocation concealment (selection bias)	Low risk	By independent statistician. Women were only aware of allocation if they received calls.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Women would be aware of calls and staff providing care may have been informed by women if they received calls.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Follow‐up at 6 weeks by researcher who was reported to be blind of study allocation and had no other contact with the women. Effect on outcomes of partial blinding unclear.
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	69 women were randomised and 11 lost to follow‐up. It was stated that an ITT analysis was carried out for women with complete data at follow‐up.
Selective reporting (reporting bias)	Unclear risk	Pilot study. Assessment from published study report.
Other bias	Unclear risk	Women in the intervention group were on average 1 year older and more likely to be living in the most disadvantaged areas and hospital stays were slightly longer, otherwise groups were comparable.