Characteristics of subjects with diabetes in the Lifeline Express Diabetic Retinopathy Screening Program
| Mean±SD | IQR | |
| Age (years) | 63.23±10.21 | 57–70 |
| Duration of DM (years) | 7.45±6.42 | 2.0–6.0 |
| HbA1c (%) | 7.48±1.78 | 6.3–8.2 |
| FPG (mmol/L) | 8.10±2.58 | 6.4–9.0 |
| Systolic blood pressure (mm Hg) | 133.44±16.18 | 120–140 |
| Diastolic blood pressure (mm Hg) | 79.88±9.73 | 73–85 |
| Height (cm) | 161.92±8.23 | 156–168 |
| Weight (kg) | 64.13±11.58 | 57–72 |
| BMI (kg/m2) | 24.75±3.41 | 22.5–26.7 |
| Waist circumference (cm) | 88.94±9.96 | 82–96 |
| Hip circumference (cm) | 95.18±9.59 | 89–101 |
| WHR | 0.94±0.06 | 0.89–0.98 |
| Heart rate | 77.32±9.93 | 70–83 |
| Creatinine (μmol/L) | 74.93±35.00 | 59–84 |
| BUN (mmol/L) | 5.70±4.76 | 4.4–6.2 |
| HDL cholesterol (mmol/L) | 1.39±0.59 | 1.04–1.56 |
| LDL cholesterol (mmol/L) | 2.70±0.99 | 2.02–3.25 |
| Triglycerides (mmol/L) | 1.92±1.24 | 1.18–2.30 |
| Total cholesterol (mmol/L) | 4.81±1.28 | 4.01–5.61 |
BMI, body mass index; BUN, blood urea nitrogen; DM, diabetes mellitus; FPG, fasting plasma glucose; HbA1c, glycosylated haemoglobin; HDL, high-density lipoprotein; LDL, low-density lipoprotein; WHR, waist-to-hip ratio.