ArticleBMJ open2023
Association of serum potassium level with dietary potassium intake in Chinese older adults: a multicentre, cross-sectional survey.
Article in BMJ open, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03290716 (Diet, Exercise and Cardiovascular Health - Effect of Salt Substitute and Stepwise Salt Supply Control in Reducing Blood Pressure in the Elderly in Nursing Homes in China), which is not on this map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Diet, Exercise and Cardiovascular Health - Effect of Salt Substitute and Stepwise Salt Supply Control in Reducing Blood Pressure in the Elderly in Nursing Homes in China: a Factorial Cluster-randomized Controlled Trial
Who cites it
5 citing papers in PubMed, 5 citations in OpenAlex.
- Potassium and the kidney.Nature reviews. Nephrology · 2026Review
- Impact of Simultaneous Initiation of Finerenone and Empagliflozin on Urinary Albumin-to-Creatinine Ratio in Asia: Pre-Specified Analysis of CONFIDENCE.Clinical journal of the American Society of Nephrology : CJASN · 2026Article
- Vitamin C status across the spectrum of chronic kidney disease and healthy controls: a cross-sectional study.The American journal of clinical nutrition · 2025Article
- Role of dietary potassium and salt substitution in the prevention and management of hypertension.Hypertension research : official journal of the Japanese Society of Hypertension · 2025Review
- Genetic Association Between Serum Calcium, Potassium Levels, and Rosacea: Evidence from a Two-Sample Mendelian Randomization Study.Clinical, cosmetic and investigational dermatology · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 5 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesEvidence linking dietary potassium and serum potassium is virtually scarce and inconclusive. The aim of the study was to investigate the association between serum potassium level and potassium intake measured by 24-hour urine. We also explored whether the association differed across health conditions.
designA cross-sectional study conducted from September 2017 to March 2018.
setting48 residential elderly care facilities in northern China.
participantsParticipants aged 55 years and older and with both serum potassium and 24-hour urinary potassium measured were classified as having a low (apparently healthy), moderate (with ≥1 health condition but normal renal function) and high (with ≥1 health condition and abnormal renal function) risk of hyperkalaemia. EXPOSURE: Potassium intake is measured by 24-hour urinary potassium. OUTCOMES: Serum potassium in association with potassium intake after adjustment for age, sex, region and accounting for the cluster effect.
resultsOf 962 eligible participants (mean age 69.1 years, 86.8% men), 17.3% were at low risk, 48.4% at moderate risk and 34.3% at high risk of hyperkalaemia. Serum potassium was weakly associated with 24-hour urinary potassium among individuals with moderate (adjusted β=0.0040/L; p=0.017) and high (adjusted β=0.0078/L; p=0.003) but not low (adjusted β=0.0018/L; p=0.311) risk of hyperkalaemia.
conclusionsA weak association between dietary potassium intake and serum potassium level existed only among individuals with impaired renal function or other health conditions but not among apparently healthy individuals. The results imply that increasing dietary potassium intake may slightly increase the risk of hyperkalaemia but may also decrease the risk of hypokalaemia in unhealthy individuals, both of which have important health concerns. TRIAL REGISTRATION NUMBER: NCT03290716; Post-results.
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