Investig Clin Urol.  2018 Nov;59(6):383-391. 10.4111/icu.2018.59.6.383.

Study on the prevalence and incidence of urolithiasis in Korea over the last 10 years: An analysis of National Health Insurance Data

• Jung JS
• Han CH
• Bae S

• KMID: 2424293
• DOI: http://doi.org/10.4111/icu.2018.59.6.383

Abstract

PURPOSE
We aimed to analyze the incidence and prevalence of urolithiasis in Korea over the last decade using the National Health Insurance (NHI) sample cohort data.
MATERIALS AND METHODS
From January 2002 to December 2013, we enrolled sample cohort data from the NHI. Patients diagnosed with international classification of diseases code N20 or N13.2 were included. The incidence and prevalence rate was counted from the same period and patients previously diagnosed with urolithiasis were excluded. We compared the incidence and prevalence of urolithiasis by region, age, and sex, and identified the changes.
RESULTS
Total 1,111,828 subjects were included. Of these subjects, 36,857 had urolithiasis. The male-to-female ratio was 1.57:1, and total incidence rate was 3.27 per 1,000 person-years (1,000p-yrs). The annual incidence was lowest in 2013 (3,138 patients) and highest in 2005 (3,751 patients). Incidence rate by diagnostic code was highest in ureter stone only (2.49 per 1,000p-yrs) and was lowest in kidney and ureter stone both (0.17 per 1,000p-yrs). Prevalence gradually increased from 3,172 in 2002 and 5,758 in 2013. Jeollanam-do had the highest incidence rate of 3.70 persons per 1,000p-yrs, and Jeju had the lowest rate of 2.84 persons per 1,000p-yrs. In gender analysis, Daegu had the highest incidence (4.56) in males, Jeollanam-do had the highest incidence (3.20) in females.
CONCLUSIONS
Annual incidence remained stable, whereas prevalence gradually increased. The incidence in male was 1.57 times higher than female, and the peak incidence age was 45-49 years, with the highest incidence occurring in Jeollanam-do and the lowest in Jeju.

Keyword

Incidence; Prevalence; Urolithiasis

MeSH Terms

Cohort Studies
Daegu
Female
Humans
Incidence*
International Classification of Diseases
Jeollanam-do
Kidney
Korea*
Male
National Health Programs*
Prevalence*
Ureter
Urolithiasis*

Figure

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  Fig. 1 Structure of the National Health Insurance-Standard cohort database (DB).

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  Fig. 2 Incidence of urolithiasis in patients by 5-year age group.

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  Fig. 3 Gender incidence by ages.

• 

  Fig. 4 Number of patients by year.

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  Fig. 5 Incidence rate of 16 major administrative districts.

• 

  Fig. 6 Prevalence analysis. (A) Total prevalence by year in each sex. (B) Comparison between prevalence rates in total, male and female.

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