Control group post-study: 95.6 + 4.7mmHg (p<0.05 compared to baseline) Low sodium study: 97 + 3.1mmHg Low sodium 91.6 + 6.4mmHg (p<0.05 compared to baseline and compared to control group post-study) Key features for bias assessment of randomised trials Citation Method of Allocation Blinding Loss to Use of Ceasing study early Reporting all Funding randomisation concealment follow-up for benefit outcome source treat where results required Alli et al. Unclear risk (no Unclear risk (no Participants: 27.3% (high Yes (low risk) No (low risk) Yes (low risk) National (1992) description of description of unclear risk risk) Council of method of method of Research, Providers: sequence concealment of Italian high risk generation) allocation) Federation of Outcome Physicians, assessors: Fondazione unclear risk Angelo and
Control group post-study: 95.6 + 4.7mmHg (p<0.05 compared to baseline) Low sodium 97 + 3.1mmHg Low sodium 91.6 + 6.4mmHg (p<0.05 compared to baseline and compared to control group post-study) Key features for bias assessment of randomised trials Citation Method of randomisation Allocation concealment Blinding Loss to follow-up Use of where required Ceasing study early for benefit Reporting all outcome results Funding source Alli et al. (1992) Unclear risk (no description of method of sequence generation) Unclear risk (no description of method of concealment of allocation) Participants: unclear risk Providers: high risk Outcome assessors: unclear risk 27.3% (high risk) Yes (low risk) No (low risk) Yes (low risk) National Council of Research, Italian Federation of Physicians, Fondazione Angelo and study: treat