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Fig. 1 | Journal of Translational Medicine

Fig. 1

From: Application of survival tree analysis for exploration of potential interactions between predictors of incident chronic kidney disease: a 15-year follow-up study

Fig. 1

Flow chart for the selection of study subjects, Tehran Lipid and Glucose Study (1999–2014). CKD Chronic kidney disease. At first phase of study (1999–2002), 10,368 subjects aged ≥ 20 years participated in the study. After exclusion of 2202 peoples, 8166 eligible subjects were followed in four consecutive phases, i.e. 2002–2005 (phase 2), 2005–2008 (phase 3), 2008–2011 (phase 4) and the final survey in 2011–2014 (phase 5). Another 2440 subjects aged ≥ 20 years were participated in the second phase and after exclusion of 273 subjects, 2167 eligible people were followed in the next 3 phases. Overall, 8238 eligible subjects were followed until 2014, and 2308 new cases of CKD (233 in phase 2; 751 in phase 3; 519 in phase 4 and 805 in phase 5 were identified after a median follow-up of 12.4 years. A total of 2095 subjects lost to follow up due to incomplete follow-up data and 5930 individuals did not developed CKD

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