Ocular comorbidity in 1800 eyes undergoing cataract surgery, by quarter
| Jan–March No (%) | April–June No (%) | July–Sept No (%) | Oct–Dec No (%) | Total No (%) | |
|---|---|---|---|---|---|
| χ2 test for trend = 5.5, p<0.05. | |||||
| No comorbidity | 345 (89.8) | 443 (91.5) | 500 (91.9) | 365 (94.1) | 1653 (91.8) |
| Comorbidity | 39 (10.2) | 41 (8.5) | 44 (8.1) | 23 (5.9) | 147 (8.2) |
| Total | 384 | 484 | 544 | 388 | 1800 |