Table 2

Adjusted odds ratio (OR) of the probability of gametocyte prevalence, using a multivariate random effect logistic model for untreated and SP-treated children separately.

Risk factors for gametocytaemia
Adjusted OR (95% CI)



No treatment
Treatment with SP

Day of follow-up
Day 7
1.48 (0.62 – 3.56)¥
1.77 (0.93–3.34)¥

Day 14
1 (ref)
1 (ref)
Age
<5 years
6.34 (1.15–34.90)
5.38 (1.91–15.17)

5–9 years
3.07 (0.98–9.55)¥
3.22 (1.19–8.72)

10–16 years
1 (ref)
1 (ref)
Asexual parasite density at enrolment
Per 100 parasites/μl
1.05 (1.00–1.11)
1.01 (1.00–1.01)
Gametocyte prevalence at enrolment
Present
3.35 (1.22–9.18)
4.12 (2.11–8.02)

Absent
1 (ref)
1 (ref)
SP treatment outcome
R2/3 resistance
-
3.40 (1.61–7.19)

Rl resistance
-
1.06 (0.45–2.47)¥

Adequate response
-
1 (ref)

Adjusted = adjusted for all other variables in the model, OR = odds ratio, CI = confidence interval, ref = reference group, ¥ = not statistically significant, - = not applicable. A GEE model was used to allow for correlation between observations from the same individuals. Children reporting the use of antimalarial drugs prior to enrolment were excluded from these analyses.

Bousema et al. Malaria Journal 2004 3:18   doi:10.1186/1475-2875-3-18

Open Data