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Table 3 Comparison of malaria incidence

From: Effect of trimethoprim-sulphamethoxazole on the risk of malaria in HIV-infected Ugandan children living in an area of widespread antifolate resistance

Time Period

HIV-uninfected

HIV-infected

IRR (95% C.I)

 

Episodes

Person time (yrs)

Incidence

Episodes

Person time

Incidence

 

Aug 1st 06 - Dec 15th 08

491

1095

0.45/psnyr

65

665

0.10/psnyr

0.20 (0.15-0.28)

Aug 1st 06 - May 15th 07

267

397

0.67/psnyr

28

224

0.13/psnyr

0.19 (0.12-0.28)

May 16th 07 - Feb 29th 08

132

364

0.36/psnyr

23

222

0.10/psnyr

0.26 (0.15-0.43)

Mar 1st 08 - Dec 15th 08

92

334

0.28/psnyr

14

220

0.06/psnyr

0.20 (0.10-0.38)

  1. *Incident Rate Ratio controlling for age at beginning each observation period