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Table 3 Baseline and (a) three months values or (b) six months values for blood pressure and sodium and potassium excretion for all participants followed-up to that time point.

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

(a) Baseline Three months
  Intervention (n = 444) Control (n = 450) Intervention (n = 444) Control (n = 450)
Systolic blood pressure (mm Hg) 128.5 (24.7) 127.3 (26.3) 124.6 (26.6) 123.8 (26.0)
Diastolic blood pressure (mm Hg) 76.8 (13.0) 75.8 (13.5) 74.2 (13.7) 74.0 (14.1)
Urinary sodium (mm/24 h) 100.9 (44.3) 103.6 (45.3) 94.0 (44.5) 97.5 (42.3)
Urinary potassium (mm/24 h) 48.3 (23.5) 49.3 (23.4) 50.1 (20.8) 52.1 (23.6)
Urinary creatinine (mm/24 h) 8.4 (2.6) 8.4 (2.6) 7.8 (2.5) 7.9 (2.8)
Urinary sodium/potassium ratio 2.4 (1.2) 2.4 (1.3) 2.1 (1.1) 2.1 (1.1)
Urinary sodium/creatinine ratio 12.4 (5.2) 12.8 (5.6) 12.4 (5.4) 13.0 (5.6)
Urinary potassium/creatinine ratio 6.0 (2.8) 6.1 (2.8) 6.7 (2.9) 6.9 (2.9)
(b) Baseline Six months
  Intervention (n = 399) Control (n = 402) Intervention (n = 399) Control (n = 402)
Systolic blood pressure (mm Hg) 129.2 (24.6) 125.6 (25.5) 127.9 (27.7) 127.4 (26.0)
Diastolic blood pressure (mm Hg) 76.9 (13.0) 75.2 (13.3) 76.0 (14.2) 78.7 (14.3)
Urinary sodium (mm/24 h) 100.7 (45.2) 104.2 (45.5) 91.8 (41.8) 89.8 (39.1)
Urinary potassium (mm/24 h) 48.5 (23.9) 50.9 (24.2) 48.2 (21.5) 52.1 (21.9)
Urinary creatinine (mm/24 h) 8.4 (2.6) 8.4 (2.5) 8.0 (2.6) 8.0 (2.5)
Urinary sodium/potassium ratio 2.4 (1.3) 2.4 (1.3) 2.2 (1.2) 1.9 (1.0)
Urinary sodium/creatinine ratio 12.4 (5.2) 12.8 (5.6) 11.9 (5.1) 11.7 (4.7)
Urinary potassium/creatinine ratio 6.0 (2.9) 6.3 (2.9) 6.3 (2.7) 6.8 (2.7)
  1. Adjusted for time of day
  2. Missing values for urinary variables; intervention, 3 months n = 1, control, baseline n = 1, 3 months n = 4
  3. Missing values for urinary variables; control, baseline n = 1, 6 months n = 1