Table 2.

Baseline demographic and clinical characteristics of participants randomly assigned to receive dietary potassium restriction or standard care

Clinical VariablesControl, n=24Potassium Restriction, n=23
Age,a yr66 (52–68)67 (57–69)
Women, n (%)7 (29)10 (43)
Body mass indexb33.5±8.434.6±8.7
Diabetes, n (%)12 (50)11 (47)
Systolic BP, mmHg123±15131±14
Diastolic BP, mmHg71±1071±9
eGFR, ml/min per 1.73 m236±933±8
Serum creatinine, mg/dl1.9±0.42.0±0.5
Serum potassium, mEq/L4.7±0.54.7±0.4
24-h Urinary potassium,c mEq/24 h69±2460±25
Renin-angiotensin-aldosterone system inhibitor use during enrolment period, n (%)8 (33)13 (57)
Diuretic use during enrolment period, n (%)1 (4)1 (4)
Neurologic variables,d %
 No neuropathy (score <2), n (%)5 (24)6 (29)
 Neuropathy (score ≥2), n (%)16 (76)15 (71)
Dietary variablesd
 Dietary potassium, mg/d4119±11584710±1998
 Dietary sodium, mg/d2452±11493059±1124
 Protein, g/d122±42112±40
 Energy,a kcal1247 (314–1849)521 (281–1722)
 Subjective global assessment (% well nourished), n (%)18 (86)21 (100)
  • Continuous variables are summarized as mean±SD, and all P values are >0.10.

  • a Indicates variables that are not normally distributed and are summarized as median (interquartile range).

  • b n=22 and n=21 patients, respectively.

  • c n=15 and n=16 patients, respectively.

  • d n=21 for both groups for all neurologic and dietary variables.