Table 1.
Baseline Demographics and Clinical Characteristics of Treatment-Naïve Patients Newly Diagnosed with Diabetic Retinopathy
| Variables | Mild NPDR (n=6878) | Moderate NPDR (n=1761) | Severe NPDR (n=439) | PDR (n=5412) | P-value |
|---|---|---|---|---|---|
| Age (years), mean (SD) | 62.2 (12.3) | 59.9 (11.8) | 57.9 (11.1) | 58.6 (12.0) | <0.0001 |
| Male, n (%) | 3801 (55.3) | 1017 (57.8) | 244 (55.6) | 2894 (53.5) | 0.014 |
| Health plan type, n (%) | |||||
| HMO | 866 (12.6) | 240 (13.6) | 57 (13.0) | 742 (13.7) | 0.292 |
| PPO | 3267 (47.5) | 876 (49.7) | 210 (47.8) | 2706 (50.0) | 0.036 |
| Other | 2745 (39.9) | 645 (36.6) | 172 (39.2) | 1964 (36.3) | <0.001 |
| Region, n (%) | |||||
| Northeast | 985 (14.3) | 252 (14.3) | 58 (13.2) | 765 (14.1) | 0.926 |
| South | 2410 (35.0) | 712 (40.4) | 183 (41.7) | 2107 (38.9) | <0.001 |
| North Central | 2497 (36.3) | 544 (30.9) | 123 (28.0) | 1686 (31.2) | <0.001 |
| West | 975 (14.2) | 253 (14.4) | 75 (17.1) | 850 (15.7) | 0.054 |
| Unknown | 11 (0.2) | 0 | 0 | 4 (0.1) | 0.247 |
| Clinical characteristics, mean (SD) | |||||
| DCSI score | 1.2 (1.6) | 1.4 (1.7) | 1.4 (1.8) | 1.7 (2.0) | <0.0001 |
| ECI score | 1.6 (1.8) | 1.6 (1.8) | 1.7 (1.9) | 1.7 (2.0) | 0.895 |
Abbreviations: DCSI, Diabetic Complications and Severity Index; ECI, Elixhauser Comorbidity Index; HMO, health maintenance organization; NPDR, nonproliferative diabetic retinopathy; PDR, proliferative diabetic retinopathy; PPO, preferred provider organization; SD, standard deviation.