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Table 1 Demographic and clinical characteristics of CKD patients seen in control and intervention clinics during the study period

From: Impact of a chronic kidney disease registry and provider education on guideline adherence – a cluster randomized controlled trial

Variable Control clinic Intervention clinic P value
  (n = 418) (n = 363)  
Age (years) 71.0 (10.3) 71.0 (10.7) 0.99
Gender (% male (N)) 95.9% (401) 94.5% (343) 0.34
Race (% black (N)) 45.9% (192) 44.9% (163) 0.77
Past Medical History (% (N))    
 Diabetes 50.2% (210) 44.9% (163) 0.14
 Hypertension 93.1% (389) 97.0% (352) 0.013
 Coronary artery disease 31.6% (132) 40.8% (148) 0.008
 Cancer 21.1% (88) 21.8% (79) 0.81
Last systolic BP (mmHg) 133.1 (18.4) 132.4 (17.9) 0.63
Last diastolic BP (mmHg) 72.8 (11.7) 71.6 (12.2) 0.17
Renal function    
Average eGFR during study period* 47.8 (40, 56) 48.1 (39, 55) 0.40
Stage of CKD (%)    
 III 91.6% 89.5% 0.52
 IV 7.7% 9.9%  
 V 0.7% 0.6%  
Proteinuria 24.2% 20.7% 0.24
Most recent laboratory results    
 PTH* 104 (61, 184) 95 (62, 156) 0.74
 Phosphorus 3.7 (0.7) 3.7 (0.7) 0.54
 Hemoglobin 12.8 (1.9) 12.6 (1.8) 0.35
Number of clinic visits during study period 2.4 (1.4) 2.3 (1.4) 0.30
Seen by nephrology during the study period 16.3% 19.8% 0.19
Seen in urgent care during the study period 49.8% 52.9% 0.38
  1. * Median (25th, 75th percentile), Wilcoxon test.