Table 1 Value of signs and symptoms for differentiating "serious" from "non-serious" eye conditions
Right eyes | |||||||
|---|---|---|---|---|---|---|---|
Sign or symptom | Serious | Not serious | Total | Sensitivity | Specificity | PPV | NPV |
*poor distance *good distance Total | 361 400 761 | 29 449 478 | 390 849 1239 | 47.4 | 93.9 | 92.6 | 52.9 |
*poor near vision *good near vision Total | 401 357 758 | 45 429 474 | 446 786 1232 | 52.9 | 90.5 | 89.9 | 54.6 |
VA<6/18 VA≥ 6/18 Total | 288 468 756 | 12 460 472 | 300 928 1228 | 38.1 | 97.5 | 96.0 | 49.6 |
*pain no pain Total | 276 485 761 | 188 287 475 | 464 772 1236 | 36.3 | 60.4 | 59.5 | 37.2 |
discharge no discharge Total | 96 661 757 | 88 386 474 | 184 1047 1231 | 12.7 | 81.4 | 52.2 | 36.9 |
*itching no itching Total | 190 566 756 | 277 199 476 | 467 765 1232 | 25.1 | 41.8 | 40.7 | 26.0 |
not straight straight Total | 91 662 753 | 21 454 475 | 112 1116 1228 | 12.1 | 95.6 | 81.3 | 40.7 |
lid closure abnormal lid closure normal Total | 31 727 758 | 7 466 473 | 38 1193 1231 | 4.1 | 98.5 | 81.6 | 39.1 |
eye red eye not red Total | 188 568 756 | 136 338 474 | 324 906 1230 | 24.9 | 71.3 | 58.0 | 37.3 |
pupil not black pupil black Total | 110 645 755 | 1 472 473 | 111 1117 1228 | 14.6 | 99.8 | 99.1 | 42.3 |