Microbial growth pattern in 1254 cultures
| Variable | n | % |
| Pure bacterial growth | ||
| Single species | 522 | 41.6 |
| Two species | 130 | 10.4 |
| Three or more species | 31 | 2.5 |
| Pure viral growth | 22 | 1.8 |
| Mixed microbial growth | ||
| Bacteria and viruses | 64 | 5.1 |
| Bacteria and chlamydia | 12 | 1.0 |
| Bacteria and Acanthamoeba | 11 | 0.9 |
| Bacteria and fungi | 8 | 0.6 |
| Positive cultures | 800 | 63.8 |
| Negative cultures | 454 | 36.2 |
| Total | 1254 | 100 |