Table 3

Median intake and number (per cent) of patients achieving recommended daily allowance (India) of potassium and increase intake compared with randomisation baseline: a controlled dietary potassium intervention study (n=172) in chronic rheumatoid arthritis [A=potassium-rich diet; B=potassium-rich diet plus potassium food supplement; C=control routine diet]—per protocol analysis

Arm/time point week/daily potassium intake (target)ABCP1P2
0 (n=57)16 (n=52)0 (n=57)16 (n=50)0 (n=58)16 (n=53)
Daily potassium intake—median (range),90th percentile, mg2902 (937–4697), 37502984 (713–4619), 41501863.7 (939–4162), 34005708.5 (4365–7545), 65602697.5 (680–4645), 39001749.8 (1039–4579), 38200.680.00 (0.02)
Minimal RDA (3500 mg) consumption14 (25%)24 (46)12 (21%)50(100)19 (33%)16 (30)0.310.00
(0.23)
Consumption more than baseline38 (73)50 (100)29 (55)0.00
(0.04)
Consumption more than baseline by 20%23 (44)48 (96)15 (28)0.00 (0.10)
Consumption more than baseline by 50%7 (13)47 (94)10 (19)0.00 (0.29)
Consumption more than 1.5 times RDA (5250 mg)042 (84)00.00
  • Target for arm A: 3200 mg daily (modified RDA for men and women); target for arm B: 4800 mg (1.5 times the RDA for women at 3200 mg); 90th percentile is rounded to multiple of 50;,significant p <0.05, two-tailed; P1: comparing baseline-ANOVA (median)/χ2 (categorical data); P2: comparing study completion week 16—ANOVA (median)/χ2 (categorical data); parenthesis in P2 shows comparison of arm A and arm C (not adjusted for repeated measure); see text for details.

  • n, number of study participants; RDA, recommended daily allowance.