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Table 4 Effect of intervention (and 95% CI) on reduction in blood pressure and urinary sodium excretion at 3 and 6 months adjusted for age, sex, locality, body mass index (random effect model)

From: A community programme to reduce salt intake and blood pressure in Ghana [ISRCTN88789643]

Variable 3 months (n = 894) 6 months (n = 801)
SBP (mmHg) -0.48 (-5.45 to 4.50) -2.54 (-6.54 to 1.45)
DBP (mmHg) -1.02 (-3.95 to 1.91) -3.95 (-7.11 to -0.78)**
Urinary sodium (mmol/24 h) -0.5 (-12.3 to 11.3) 6.0 (-4.1 to 16.1)
Urinary sodium: creatinine -0.01 (-1.35 to 1.32) 0.85 (-0.53 to 2.24)
Urinary sodium: potassium 0.08 (-0.22 to 0.39) 0.30 (0.02 to 0.57)*
  1. Adjusted for time of day *p = 0.03, **p = 0.015
  2. Effect is control – intervention (negative values favour intervention).