Evidence map›Paper›PMID 29967945›Full record

ArticleWorld journal of urology2019

Increased amount and duration of tea consumption may be associated with decreased risk of renal stone disease.

Hung-Yu Chen, Jin-Shang Wu, Yin-Fan Chang, Zih-Jie Sun, Chih-Jen Chang, Feng-Hwa Lu, Yi-Ching Yang

Abstract read
PubMed Publisher
In one paragraph

Article in World journal of urology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 2 pooled it
1.5field-weighted citation impact, top 17% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 2 syntheses or guidelines pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Review
  6. Review
  7. Article
  8. Diet and Stone Disease in 2022.Journal of clinical medicine · 2022
    Review
  9. Article
  10. The Associations Between Tea and Coffee Drinking and Risk of Calcium-Oxalate Renal Stones.Plant foods for human nutrition (Dordrecht, Netherlands) · 2021
    Article
  11. Review
  12. Article
  13. Article
  14. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Hung-Yu ChenThe Department of Family Medicine, National Cheng Kung University Hospital, No.138, Sheng Li Road, Tainan, 70403, Taiwan.
Jin-Shang WuThe Department of Family Medicine, National Cheng Kung University Hospital, No.138, Sheng Li Road, Tainan, 70403, Taiwan.
Yin-Fan ChangThe Department of Family Medicine, National Cheng Kung University Hospital, No.138, Sheng Li Road, Tainan, 70403, Taiwan.
Zih-Jie SunThe Department of Family Medicine, National Cheng Kung University Hospital, No.138, Sheng Li Road, Tainan, 70403, Taiwan.
Chih-Jen ChangThe Department of Family Medicine, National Cheng Kung University Hospital, No.138, Sheng Li Road, Tainan, 70403, Taiwan.
Feng-Hwa LuThe Department of Family Medicine, National Cheng Kung University Hospital, No.138, Sheng Li Road, Tainan, 70403, Taiwan. fhlu@mail.ncku.edu.tw.
Yi-Ching YangThe Department of Family Medicine, National Cheng Kung University Hospital, No.138, Sheng Li Road, Tainan, 70403, Taiwan. yiching@mail.ncku.edu.tw.
National Cheng Kung University Hospital · TWNational Cheng Kung University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposePrevious studies have looked into the association between tea consumption and renal stone disease, but the impact of tea consumption over time has not yet been fully clarified. Our study aimed to examine the amount and duration of tea consumption concomitantly in relation to the risk of renal stone disease.

methodsA total of 13,842 subjects who underwent health check-ups were recruited. Average tea consumption per day was defined as the amount of tea consumption per day multiplied by the frequency per week divided by seven. A "cup" was defined as 120 mL for each Chinese traditional teapot," and "cup-year" was calculated by multiplying the number of daily cups and the years of tea consumption to express the cumulative dose of tea consumption over time. The diagnosis of renal stone disease was established based on the results of abdominal sonography.

resultsThe amount of daily tea consumption was 119.2 ± 306.8 and 131.7 ± 347.3 mL in groups with and without renal stone disease. After adjusting for other clinical variables, daily tea consumption ≥ 240 mL vs. none was related to lower risk of renal stone disease (OR = 0.84, CI 0.71-0.99, p = 0.037). In another model, the associated risk of renal stone disease decreased significantly with tea consumption ≥ 20 cup-year (OR = 0.79, CI 0.66-0.94, p = 0.008), but not < 20 cup-year (OR = 0.92, CI 0.78-1.09, p = 0.34).

conclusionsDaily tea consumption ≥ 240 mL (two cups) was associated with a lower risk of renal stone disease. Tea consumption ≥ 20 cup-year also had a decreased associated risk of renal stone disease.

Indexed as

PhytotherapyTeaAdultBeveragesDrinkingFemaleHumansKidney CalculiMaleMiddle AgedRisk FactorsTime FactorsTeaAmountCup-yearRenal stone diseaseTea

Identifiers

PMID29967945
OpenAlexW2810790206

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.