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Table 6 Comparison of ICC process of care indicators between urban and rural practices

From: Intracluster correlation coefficients for sample size calculations related to cardiovascular disease prevention and management in primary care practices

Quality of Care Indicator* ICC: Rural ICC: Urban Ratio
N = 14 N = 70 (Urban/Rural)
All patients
One blood pressure reading 0.056 0.052 0.92
Two blood pressure readings 0.119 0.105 0.88
Lipid profile 0.012 0.082 6.91
Fasting blood glucose 0.021 0.047 2.22
egfr 0.016 0.075 4.83
ACR 0.133 0.115 0.86
Smoking status 0.054 0.091 1.69
Waist circumference 0.117 0.167 1.43
Hypertension
One blood pressure reading 0.019 0.050 2.59
Two blood pressure readings 0.085 0.118 1.39
Anti-hypertensive medication 0.017 0.016 0.91
Dyslipidemia
Lipid profile 0.014 0.055 4.08
Lipid lowering medication 0.027 0.020 0.74
Diabetes
HbA1c 0.026 0.090 3.48
glycemic medication 0.027 0.045 1.68
1 blood pressure reading 0.067 0.065 0.97
2 blood pressure reading 0.166 0.123 0.74
Lipid Profile 0.014 0.105 7.68
Fasting blood glucose 0.057 0.097 1.69
egfr 0.021 0.097 4.56
ACR 0.142 0.164 1.16
Chronic Kidney Disease
egfr 0.005 0.072 14.61
ACR 0.112 0.129 1.16
1 blood pressure reading 0.012 0.088 7.10
2 blood pressure reading 0.063 0.177 2.82
Coronary Artery Disease
CAD Medication 0.029 0.016 0.53
1 blood pressure reading 0.041 0.093 2.23
2 blood pressure reading 0.053 0.147 2.77
Lipid profile 0.006 0.103 15.88
Smoking
Smoking advice 0.118 0.113 0.96
Smoking program 0.038 0.164 4.32
Smoking cessation drug 0.090 0.050 0.56
  1. *whether specified quality of care indicator was discussed, recommended, or performed during a one year timeframe.
  2. eGFR – Estimated Glomerular Filtration Rate; ACR – Albumin-to-Creatinine ratio.