Table 1.
Demographics and medical history of patients in the training dataset.
| Parameters | Development dataset |
Internal validation dataset |
||||
|---|---|---|---|---|---|---|
| FK group | Non-FK group | P value | FK group | Non-FK group | P value | |
| Number | 713 | 334 | 306 | 143 | ||
| Mean age (SD), years | 54.1 (12.7) | 43.9 (15.7) | <0.001∗ | 52.4 (4.1) | 43.1 (16.7) | <0.001∗ |
| Male, No. (%) | 464 (65.1) | 276 (82.6) | <0.001∗ | 199 (65.0) | 118 (82.5) | <0.001∗ |
| Risk factor | ||||||
| Ocular injury (%) | 346 (48.5) | 54 (16.2) | <0.001∗ | 148 (48.4) | 23 (16.1) | <0.001∗ |
| Ocular surgery (%) | 29 (4.0) | 13 (3.9) | 0.893 | 13 (4.2) | 6 (4.2) | 0.979 |
| Tap water contact (%) | 0 (0.0) | 8 (2.4) | <0.001∗ | 0 (0.0) | 3 (2.1) | 0.032∗ |
| Contact lens (%) | 4 (0.6) | 34 (10.2) | <0.001∗ | 2 (0.7) | 14 (9.8) | <0.001∗ |
| Unknown (%) | 327 (45.9) | 226 (67.7) | <0.001∗ | 140 (45.8) | 97 (67.8) | <0.001∗ |
| Mean duration (SD), days | 22.7 (16.9) | 20.8 (22.7) | 0.523 | 22.9 (18.2) | 20.4 (23.3) | 0.622 |
| Mean BCVA (SD) | 1.18 (0.47) | 0.70 (0.54) | <0.001∗ | 1.23 (0.49) | 0.76 (0.51) | 0.012∗ |
| Scraping positive (negative) | 536 (177) | 127 (67) | 0.007∗ | 229 (77) | 55 (28) | 0.119 |
| Culture positive (negative) | 393 (320) | 108 (86) | 0.891 | 168 (138) | 46 (37) | 0.933 |
Note: ∗P < 0.05 was considered statistically significant; BCVA: Best corrected visual acuity.