Table 1: Frequency of HPV-16 DNA among Sudanese conjunctival intra-epithelial neoplasia patients according gender.
| Gender | HPV -16 DNA | Total (%) | |
| Positive (%) | Negative (%) | ||
| Male | 5 (10%) | 25 (50%) | 30 (60%) |
| Female | 2 (4%) | 18 (36%) | 20 (40%) |
| Total | 7 (14%) | 43 (86%) | 50 (100%) |