Meland et Unclear risk Unclear risk Participants: 0% loss to Not required No (low risk) Yes (low Research al. (1997) (method of (method of low risk follow-up (low (low risk) risk) Council of randomisation not concealment of risk) Norway (low Providers: low stated) randomisation not risk) risk described) Outcome assessors: unclear risk Summary table Citation Study Population Intervention Outcomes Sample Intervention Compliance to Results & design level measured size duration sodium target location of relevant to (urinary data) research question Meland II Adults (aged All participants Blood pressure 46 8 weeks Low sodium Mean difference (seated after 2 et al. with received dietary period: 83 between low sodium min rest), total (2009), parallel hypertension advice to consume mmol/24hr period and normal cholesterol, Norway design (SBP: a moderate sodium period: HDL Normal sodium study >160mmHg, diet, [] period: 126 SBP: -5mmHg (SEM: DBP: >90mmHg) then randomised mmol/24hr CI: -12.43, 2.43) (on into one of two groups: (p=0.11) DBP: -5mmHg (SEM: drug 1.38, CI: -7.70, -2.30) 1. Moderately Note values treatment) reduced salt diet calculated from
Meland et al. (1997) Unclear risk (method of randomisation not stated) Unclear risk (method of concealment of randomisation not described) Participants: low risk Providers: low risk Outcome assessors: unclear risk 0% loss to follow-up (low risk) Not required (low risk) No (low risk) Yes (low risk) Research Council of Norway (low risk) Summary table Citation & location Study design level of Population Intervention Outcomes measured relevant to research question Sample size Intervention duration Compliance to sodium target (urinary data) Results Meland et al. (2009), Norway [] parallel design study II Adults (aged with hypertension (SBP: >160mmHg, DBP: >90mmHg) (on drug treatment) All participants received dietary advice to consume a moderate diet, then randomised into one of two groups: 1. Moderately reduced salt diet Blood pressure (seated after 2 min rest), total cholesterol, HDL 46 8 weeks Low sodium period: 83 mmol/24hr Normal sodium period: 126 mmol/24hr (p=0.11) Note values calculated from Mean difference between low sodium period and normal sodium period: SBP: -5mmHg (SEM: CI: -12.43, 2.43) DBP: -5mmHg (SEM: 1.38, CI: -7.70, -2.30)
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