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. 2017 Apr 9;2017(4):CD004022. doi: 10.1002/14651858.CD004022.pub4

1142 Knuist 1998.

Methods Op
 P
Participants N 361 (80% Caucasian)
 Pregnant women, Normotension
 Age 27.5
Interventions SR 40 (124‐84)
 Dur 35 (mean duration)
Outcomes DBP
Notes LoFo: 67. IT: No
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Insufficient information
Allocation concealment (selection bias) Low risk Block randomisation. Treatment allocation in opaque sealed envelopes.
Blinding (performance bias and detection bias) 
 All outcomes High risk Open study
Incomplete outcome data (attrition bias) 
 All outcomes High risk Lost to follow up LS: 35/184; US: 32/177
Selective reporting (reporting bias) High risk SBP effect not reported
Blinding of participants and personnel (performance bias) 
 All outcomes High risk Open study: Performance bias due to knowledge of the allocated interventions by participants and personnel during the study.
Blinding of outcome assessment (detection bias) 
 All outcomes High risk Open study: Detection bias due to knowledge of the allocated interventions by outcome assessors