Hager 1989.

Methods	Randomized trial Study period: not given
Participants	Inclusion criteria: women treated for chorioamnionitis, postpartum endometritis (defined as temperature of at least 38.1 °C, leukocytosis 15,000/mL, and uterine tenderness), or post hysterectomy cellulitis. All had received standard parenteral antibiotics until 48‐72 hours afebrile and clinically well Setting: Lexington, Kentucky, USA Number of participants: n = 163 evaluated, n = 81 with postpartum endometritis
Interventions	Oral ampicillin 500 mg every 6 hours or tetracycline 500 mg every 6 hours (if penicillin allergic) to complete 10 days total of antibiotic therapy (n = 38) vs no treatment after iv antibiotics (n = 43)
Outcomes	Further treatment with antibiotics by the time of follow up at 2‐4 weeks after hospital discharge Postdischarge infections (wound or urinary tract infection) classified as failures
Notes	Information on route of delivery was not given Pharmaceutical sponsorship ‐ none apparent
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	States “random” without further description
Allocation concealment (selection bias)	Unclear risk	Not stated
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	States “single‐blinded study” in abstract but no further description
Blinding of outcome assessment (detection bias) All outcomes	Low risk	“The physician evaluating the patient at the follow‐up examination [..] was blinded as to whether they had taken the oral antibiotic or not:” Outcome assessor was blinded
Incomplete outcome data (attrition bias) All outcomes	Low risk	163 (80%) out of 204 women were evaluated. 31 had no follow‐up visits, 10 had infection at other organ sites
Selective reporting (reporting bias)	Unclear risk	The protocol is not available, insufficient information to permit judgement
Other bias	Low risk	Study appeared to be free of other sources of bias