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COMPARATIVE STUDY
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Outcomes of stage 3-5 chronic kidney disease before end-stage renal disease at a single center in Taiwan

Yen-Ling Chiu, Kuo-Liong Chien, Shuei-Liong Lin, Yung-Ming Chen, Tun-Jun Tsai, Kwan-Dun Wu
Nephron. Clinical Practice 2008, 109 (3): c109-18
18663322

BACKGROUND: Taiwan has the highest incidence of end-stage renal disease (ESRD) in the world, but little is known about the outcomes of patients with chronic kidney disease (CKD) before ESRD in Taiwan. This study investigated the rate of renal progression and predictors for ESRD and death in a prospective cohort of patients under usual nephrologic care at a single center.

METHODS: A total of 433 patients at CKD stage 3-5 short of dialysis were recruited from nephrology clinics. Patients were monitored for up to 36 months or until ESRD, death or loss to follow-up. Glomerular filtration rates (GFR) were calculated by the Modification of Diet in Renal Disease abbreviated formula.

RESULTS: At baseline, mean age was 65.6 years, 61.7% were male, 33.3% were diabetic and 29.1% had cardiovascular diseases (CVD). At the end of follow-up, 123 patients (28.4%) had advanced to ESRD and 41 (9.5%) had died. Mean annual declines in GFR were 2.24, 4.22, and 3.23 ml/min/1.73 m(2) for stages 3, 4, and 5, respectively. By Cox regression model, patients with CVD, lower BMI and higher systolic BP were more likely to develop ESRD. Older patients with CVD and lower systolic BP were more likely to die.

CONCLUSION: In this CKD cohort, patients were more likely to develop ESRD than cardiovascular death. The rate of GFR decline and predictors of ESRD were comparable to those reported in Western countries. Thus, the high incidence of ESRD in Taiwan may be attributed, at least in part, to lower cardiovascular mortality.

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