Reported dry eye (DE) symptoms and clinical findings
| Clinical findings | ||||
|---|---|---|---|---|
| DE | Control | Total | ||
| Symptoms | DE | 1052 | 658 | 1710 |
| Control | 302 | 250 | 552 | |
| Total | 1354 | 908 | 2262 | |
The discrepant group contained 960 (302+658, 42.44%) subjects, which is significant in statistics (Pearson chi-square test: χ2=4.027, p=0.045<0.05). The sensitivity and specificity of DE identification based on subject symptoms were 77.70% (1052/1354) and 27.53% (250/908), respectively, and the accuracy of using the subjects’ perceived symptoms for DE identification was 57.56% ((1052+250)/2262). The positive predictive value was 61.52% (1052/1710), and the negative predictive value was 45.29% (250/552).