Table 4.
Comparison between percentages of volunteers who remembered being infected by worms
| HIV-positives | HIV-negatives | Comparison of % | ||||||
| Recall of worms1 | Numbers | % | 95% CI | Numbers | % | 95% CI | Difference | 95% CI4 |
| At any age | 122/1672 | 73.1 | 65.9, 79.2 | 51/65 | 78.5 | 67.0, 86.7 | -5.4 | -16.4, 7.6 |
| As a child | 99/1672 | 59.3 | 51.7, 66.4 | 31/65 | 47.7 | 36.0, 59.6 | 11.6 | -2.5, 25.3 |
| As a child and as an adult | 47/1653 | 28.5 | 22.1, 38.5 | 8/65 | 12.3 | 6.4, 22.5 | 16.2* | 4.2, 25.6 |
| As an adult (only) | 70/1653 | 42.4 | 35.1, 50.1 | 28/65 | 43.1 | 31.8, 55.2 | -0.7 | -14.8, 13.0 |
| No recall of worms | 45/1672 | 26.9 | 20.8, 34.1 | 14/65 | 21.5 | 13.3, 33.0 | 5.4 | -7.6, 16.4 |
CI = confidence interval.
1Child = up to 15th birthday. Adult = after 15th birthday.
2The reduction from n = 170 is because three individuals were uncertain about whether they had, or had not, seen worms in faeces; hence, n = 167.
3Of the 167 who gave definitive answers on infection, two knew that they had been infected as children but were not sure if they had been infected when adults; hence, n = 165.
4CIs which exclude zero indicate that the HIV-positives and HIV-negatives were significantly different (p < 0.05) [41].
*Significantly more HIV-positives remembered having been infected by worms as both a child and an adult (p < 0.05).