Table 6.
Differences in the sex distribution, age of patients at onset of diabetes mellitus (DM), duration of DM, and the interval between onset of DM and onset of retinopathy, between patients with proliferative and nonproliferative diabetic retinopathy (PDR and NPDR, respectively) groups
| Parameters | DR patients (n = 50) | Test of significance | P value | |||
|---|---|---|---|---|---|---|
|
|
||||||
| NPDR group (n = 25) (SD) | PDR group (n = 25) (SD) | |||||
|
|
|
|||||
| n | % | n | % | |||
| Sex | ||||||
| Male | 15 | 60 | 17 | 68 | χ2 = 0.35 | <0.005 |
| Female | 10 | 40 | 8 | 32 | OR (95% CI) = 0.71 (0.22–2.25) | |
| Age at onset of DM in years | 59.7 ± 5.41 | 54.2 ± 6.48 | t = 3.25 | >0.05 | ||
| Duration of DM | 15.5 ± 8.31 | 15.4 ± 6.14 | t = 0.06 | >0.05 | ||
| Interval between onset of DM and onset of retinopathy | 5.9 ± 2.42 | 5.5 ± 1.92 | t = 0.58 | >0.05 | ||
Abbreviations: χ2, chi-squared test; CI, confidence interval; OR, odds ratio; SD, standard deviation; t, Student’s t-test.