Table 1.

Prevalence of periportal fibrosis (PPF) and segmental branch wall thickening (PBWT), portal pressure, and S. mansoni infection intensity and prevalence by age, sex, and village in Kome island, Sengerema, Tanzania

Age group (year)	No. exam.	Periportal fibrosis (PPF)			S. mansoni infection status
					Prevalence				Intensity of infection
		Total	Male	Female	No. exam.	Total	Male	Female	All	Male	Female
10-19	29	11 (37.9)	7 (46.7)	4 (28.6)	30	19 (63.3)	11 (65.8)	8 (57.1)	65.7	11 (65.8)	8 (57.1)
20-29	67	28 (41.8)	17 (51.5)	11 (32.4)	70	27(38.6)	17 (50.0)	10 (27.9)	88.0	17 (50.0)	10 (27.9)
30-39	96	47 (49.0)	31 (56.4)	16 (39.0)	107	8 (26.2)	16 (28.1)	12 (24.0)	97.7	16 (28.1)	12 (24.0)
40-49	79	31 (39.2)	21 (45.7)	10 (30.0)	83	24 (28.9)	14 (29.8)	10 (27.8)	118.0	14 (29.8)	10 (27.8)
50-60	52	24 (46.2)	15 (48.4)	9 (42.9)	56	14 (25.0)	10 (30.3)	4 (17.4)	156.0	10 (30.3)	4 (17.4)
60 and over	37	11 (29.7)	6 (30.0)	5 (29.4)	42	9 (21.4)	7 (29.2)	2 (11.2)	128.0	7 (29.2)	2 (11.2)
Total	360	152 (42.2)	97 (48.5)	55 (34.4)	388	121 (31.2)	75 (35.5)	46 (26.0)		75 (35.5)	46 (26.0)
Village name
Nyamiswi	28	13 (46.4)	8 (47.1)	5 (45.5)	37	4 (10.8)	2 (10.5)	2 (11.1)	42.0	2 (48)	2 (36)
Bugoro	45	22 (48.9)	15 (50.0)	7 (46.7)	50	7 (14.0)	7 (21.2)	0 (0.0)	76.4	7 (75.4)	0 (0.0)
Lugata	56	19 (33.9)	13 (36.1)	6 (30.0)	58	14 (24.1)	10 (27.0)	4 (19.1)	56.6	10 (62.4)	4 (42)
Buhama	40	12 (30.0)	6 (30.0)	6 (30.0)	46	13 (28.3)	6 (30.0)	7 (26.9)	112.6	6 (104)	7 (120)
Kabaganga	54	21 (38.9)	11 (42.3)	10 (35.7)	57	22 (38.6)	12 (41.4)	10 (35.7)	63.3	12 (78)	10 (45.6)
Isenyi	39	22 (56.4)	17 (77.3)	5 (29.4)	40	14 (35.0)	9 (39.1)	5 (29.4)	97.7	9 (109.3)	5 (76.8)
Nyakasasa	48	19 (39.6)	16 (57.1)	3 (15.0)	50	21 (42.0)	14 (48.3)	7 (33.3)	126.8	14 (102.8)	7 (74.8)
Izindabo	50	24 (48.0)	11 (52.4)	13 (44.8)	50	26 (52.0)	15 (71.3)	11 (37.9)	159.7	13 (216)	11 (82.9)
Total	360	152 (42.2)	97 (48.5)	55 (34.4)	388	121 (31.2)	75 (35.6)	46 (26.0)