Table 1.

Comparison of Schistosoma haematobium–affected cases and their unaffected age- and sex-matched control group

Characteristic	Study subject group
	77 cases with abnormal intake ultrasound exams	77 matched controls with normal intake ultrasound exams	95 with abnormal intake ultrasound exams—not followed
Mean age ± SD (range)	27.7 ± 16.8 years (17–85)	27.7 ± 16.7 years (17–85)	31.2 ± 18.5 years (17–99)
Percent male	65	65	63
Infection prevalence, pre-Rx	81%	59%†	62%*
Infection prevalence, post-Rx	26%	19%	−
Prevalence of heavy infection, pre-Rx	22%	9%*	8%*
Prevalence of heavy infection, post-Rx	0%	1%	−

Rx = praziquantel treatment 40 mg/kg given once; SD = standard deviation.

Significant difference from the cases (ultrasound pathology group included in this report).

^*P < 0.04.

^†P < 0.01.