Increased Tea Consumption is Associated With a Decreased Risk of Renal Stone Disease in a Taiwanese Population

Completed

• Conditions: Renal Stone

• Registration Number: NCT03318926
• Lead Sponsor: National Cheng-Kung University Hospital

Brief Summary

The objective of the this study was to examine the amount and duration of tea consumption in relation to the risk of renal stone disease.

Detailed Description

Previous studies have investigated the association between tea consumption and renal stone disease, but the results are still unclear. Besides, the impact of the duration of tea consumption has not yet been investigated in the aforementioned studies. The present study was conducted as a retrospective research to investigate the relationship between both tea consumption amount and time and renal stone disease. Information on tea consumption was obtained by four closed-ended questions in questionnaires, and the diagnosis of renal stones was established on the results of abdominal sonography.

Study Timeline

• Study Start: 2001-06
• Primary Completion: 2009-08
• Study Completion: 2009-08
• Status Verified: 2017-10
• Study First Submitted: 2017-10-18
• Study First Submitted QC: 2017-10-22
• Last Update Submitted: 2017-10-23
• Study First Posted: 2017-10-24
• Last Update Posted: 2017-10-25

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 13842

Inclusion Criteria

• ≥ 18 years old

Exclusion Criteria

• individuals with a history of hyperuricemia or gout at baseline, findings of abdominal ultrasound showing transplant kidney, only one kidney, or gouty nephropathy, or missing data

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Renal stone diseases	health check-ups from June 2001 to August 2009	The diagnosis of renal stones was established on the results of abdominal sonography