Characteristics | P. aeruginosa (n = 33) | P. putida (n = 16) | p-value (x2-test) |
---|---|---|---|
Male sex | 16 (48.5) | 7 (43.8) | 0.755 |
Age, mean ± SD, years | 47.0 ± 24.4 | 59.3 ± 18.9 | 0.060† |
Age subgroup | |||
0–19 | 2 (6.1) | 1 (6.3) | 1.000* |
20–39 | 14 (42.4) | 1 (6.3) | 0.018* |
40–59 | 4 (12.1) | 6 (37.5) | 0.060* |
≥ 60 | 13 (39.4) | 8 (50.0) | 0.482 |
Symptom duration‡ | |||
mean ± SD, days | 4.3 ± 3.9 | 9.5 ± 7.8 | 0.022† |
> 5 days | 8 (24.2) | 11 (68.8) | 0.003 |
Duration of hospitalization§, | |||
mean ± SD, days | 10.4 ± 6.4 | 8.6 ± 4.9 | 0.325† |
Seasonal distribution | |||
Spring (Mar-May) | 7 (21.2) | 2 (12.5) | 0.698* |
Summer (Jun-Aug) | 6 (18.2) | 6 (37.5) | 0.169* |
Autumn (Sep-Nov) | 15 (45.5) | 3 (18.8) | 0.069 |
Winter (Dec-Feb) | 5 (15.2) | 5 (31.3) | 0.261* |
Predisposing factors | |||
Corneal trauma | 9 (27.3) | 10 (62.5) | 0.018 |
Contact-lens wear | 12 (36.4) | 0 (0.0) | 0.005* |
Previous OSD# | 7 (21.2) | 6 (37.5) | 0.304* |
Previous ocular surgery¶ | 5 (15.2) | 3 (18.8) | 1.000* |
Previous topical antibiotics use | 12 (36.4) | 8 (50.0) | 0.362 |
Previous topical steroid use | 5 (15.2) | 0 (0.0) | 0.158* |
Systemic disease** | 10 (30.3) | 7 (43.8) | 0.354 |
No apparent cause | 8 (24.2) | 4 (25.0) | 1.000* |