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Table 3 Age when questioned, duration of residence in Cape Town and worm infection at estimated child and adult ages

From: Recall of intestinal helminthiasis by HIV-infected South Africans and avoidance of possible misinterpretation of egg excretion in worm/HIV co-infection analyses

HIV-positive (n = 169)1

Age when questioned

Duration2

Worms at child age3

Worms at adult age4

Mean age

30.6*

9.5†

9.2 NSD

26.6 NSD

Median age

28.7

8.1

9.0

28.0

Age range

16.4 – 63.1

0.1 – 40.6

4.0 – 14.0

15.0 – 42.0

HIV-negative (n = 63) 1

Age when questioned

Duration 2

Worms at child age 3

Worms at adult age 4

Mean age

39.9*

13.5†

10.3 NSD

28.9 NSD

Median age

41.6

12.5

10.5

25.0

Age range

15.2 – 74.5

0.1 – 54.1

5.0 – 14.0

15.0 – 49.0

  1. 1Numbers reduce from 170 and 65 because birth dates were not known for one HIV-positive and two HIV-negative individuals.
  2. 2Duration of residence in Cape Town (years).
  3. 3Child = up to 15th birthday. Infection as a child was remembered by 91 HIV-positives and 26 HIV-negatives.
  4. 4Adult = after 15th birthday. Infection as an adult was remembered by 25 HIV-positives and 16 HIV-negatives.
  5. *Mean ages when questioned were significantly different (p < 0.01).
  6. †Mean durations of stay in Cape Town were significantly different (p < 0.01).
  7. NSD = not significantly different.