Morgan et Unclear risk Unclear risk Participants: 7.5% (low risk) No (unclear No (low risk) Unclear risk Department of al. (1978) (method of (method of low risk risk) (Reported that Veterans Affairs randomisation not allocation biochemical values and National Providers: stated) concealment not were similar at the Heart high risk stated) end of the study Foundation of but did not report Australia (low Outcome values.) risk) assessors: low risk Summary table Citation Study Population Intervention Outcomes Sample size Compliance to Results & design level measured sodium target location of relevant to duration (urinary data) research question Morgan II Adult (aged 28 Participants Blood pressure 12 (in 8 Males Males – (supine after et al. 50 years), with randomly divided sodium and Restricted sodium DBP: 10 mins, (1981), parallel hypertension into four groups: control arms standing after 78 + 8 Australia design (DBP: >90 - only) (6 Control pre-diet: 5 mins) 1. Control group mmol/24hr study <105mmHg males, 6 96mmHg (SD not [] (no treatment) females) Note: data on (p<0.001 stated to be standing BP 2. Advised to compared to than + 7’) ‘less Due to the not in reduce dietary start) way data Control post-diet: sufficient sodium to was 94mmHg detail to 70mmol/day presented, it calculate had to be
Morgan et al. (1978) Unclear risk (method of randomisation not stated) Unclear risk (method of allocation concealment not stated) Participants: low risk Providers: high risk Outcome assessors: low risk 7.5% (low risk) No (unclear risk) No (low risk) Unclear risk (Reported that biochemical values were similar at the end of the study but did not report values.) Department of Veterans Affairs and National Heart Foundation of Australia (low risk) Summary table Citation & location Study design level of Population Intervention Outcomes measured relevant to research question Sample size duration Compliance to sodium target (urinary data) Results Morgan et al. (1981), Australia [] parallel design study II Adult (aged 28 – 50 years), with hypertension (DBP: >90 - <105mmHg Participants randomly divided into four groups: 1. Control group (no treatment) 2. Advised to reduce dietary sodium to 70mmol/day Blood pressure (supine after 10 mins, standing after 5 mins) Note: data on standing BP not in sufficient detail to calculate 12 (in sodium and control arms only) (6 males, 6 females) Due to the way data was presented, it had to be 8 Males Restricted sodium 78 + 8 mmol/24hr (p<0.001 compared to start) Males DBP: Control pre-diet: 96mmHg (SD not stated to be ‘less than + 7’) Control post-diet: 94mmHg
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