TABLE 3.

Demographic data, parasite infection data, and durations of water contact time of S. mansoni-infected patients with different degrees of hepatic fibrosis determined one year after treatment with praziquantel

Parameter	Severity of fibrosis			P valuea
	Group 0 (absent)	Group 1 (incipient)	Group 2 (moderate)
No. (%) of subjects	58 (63.7%)	29 (31.9%)	4 (4.4%)
Age (yr)
Range	15-85	14-85	54-63
Mean ± SD	50.4 ± 18.1	48.5 ± 17.2	59.0 ± 4.2
Median	52.5	51	59.5	0.405
Gender
No. (%) of females	34 (59%)	12 (41%)	2 (50%)	0.314
No. (%) of males	24 (41%)	17 (59%)	2 (50%)
Eggb counts (no. of eggs/g of feces)
Range	0-184	0-12	0
Mean ± SD	7.7 ± 30.9	0.4 ± 2.2	0 ± 0
Median	0	0	0	0.241
Eggb distribution
No. (%) of negative results	50 (86%)	28 (97%)	4 (100%)	0.249
No. (%) of positive results	8 (14%)	1 (3%)	0 (0%)
Other parasitic infectionsc
No. (%) of negative results	38 (65%)	22 (76%)	3 (75)	0.596
No. (%) of positive results	20 (35%)	7 (24%)	1 (25)
Water contact TBMd in no. of total body min (no. of subjects)	153 (57)	154 (29)	138 (4)	0.917

^aSignificance levels based on χ² test (categorical variables) or Kruskal-Wallis tests (continuous variables). The minimum accepted significance level was P < 0.05.

^bS. mansoni eggs.

^cInfections of Ascaris lumbricoides, Ancylostoma duodenale, Trichuris trichiura, Enterobius vermicularis, and species of Taenia.

^dTBM, total body minutes.