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Table 3 Algorithm for estimating the risk of CKD using total point values in the simple model

From: Risk scores for predicting incident chronic kidney disease among rural Chinese people: a village-based cohort study

Risk factorReference value (Wij)βiβi (Wij-WiREF)Pointij = βi (Wij-WiREF)/Ba
Waist circumference, men/women (cm) 0.013  
  < 80/7577.0/72.0(W1REF) 00
 80–84.9/75–79.982.5/77.5 0.0721
 85–89.9/80–84.987.5/82.5 0.1372
 90–94.9/85–89.992.5/87.5 0.2023
  ≥ 95/9099.0/95.0 0.2864
SBP (mmHg) 0.025  
  < 120110(W2REF) 00
 120–139130 0.5008
 140–159150 1.00015
  > 160170 1.50023
Sex 0.686  
 Men1(W3REF) 00
 Women2 0.68611
Education −0.532  
 Illiterate1(W4REF) 00
 Primary School and above2 −0.532−8
Diabetes 1.042  
 NO0(W5REF) 00
 YES1 1.04216
  1. aB = 5*0.013 = 0.065; CKD: Chronic kidney disease; SBP: systolic blood pressure