Table 1.

Mean school- and age-related prevalence (%)* of helminthiasis and giardiasis in Children (with standard errors bracketed)

Asc/Trich eggs† Ascaris eggs		Trichuris eggs			Giardia cysts			Children
Overall 55.8 (0.9) 24.8 (0.7)		50.6 (0.8)			17.3 (0.6)			3890
Schools (n = 9)
A	40.2 (3.6)*		16.9 (2.2)‡‡		36.5 (3.5)* 1		0.6 (2.2)*	189
B	59.2 (2.2)‡‡		22.2 (1.7)		55.4 (2.2)**		18.4 (1.7)	495
C	34.2 (2.1)*		8.3 (1.6)*		32.1 (2.1)*		14.7 (1.6)	517
D	37.6 (2.5)*		9.9 (1.4)*		35.5 (2.5)*		8.6 (1.4)*	383
E	67.3 (2.1)**		38.2 (1.8)**		61.8 (2.1)**		22.1 (1.8)**	526
F	78.0 (1.8)**		47.2 (1.8)**		71.2 (2.0)**		21.5 (1.8)**	517
G	46.1 (2.4)*		15.4 (1.9)*		41.5 (2.4)*		18.8 (1.9)	436
H	50.0 (2.2)**		22.1 (1.7)		41.3 (2.2)*		17.9 (1.7)	508
I	79.6 (2.3)**		37.3 (2.7)**		74.6 (2.4)**		16.3 (2.1)	319
Ages in years
6	43.1 (2.1)*		22.4 (1.8)		36.0 (2.1)*		22.4 (1.8)**	541
7	56.8 (2.3)		26.3 (2.0)		52.8 (2.3)		19.8 (1.8)**	475
8	58.7 (2.3 )		27.4 (2.1)		52.9 (2.3)		22.9 (2.0)**	467
9	55.9 (2.3)		23.7 (2.0)		51.5 (2.3)		16.4 (1.7)	476
10	57.4 (2.2)		26.8 (2.0)		50.4 (2.3)		15.6 (1.6)	488
11	59.5 (2.3)††		23.6 (2.0)		56.0 (2.3)**		18.1 (1.8)	454
12	54.1 (2.3)		24.2 (2.0)		49.3 (2.3)		13.6 (1.6)	471
13	59.1 (2.8)		25.3 (2.5)		57.1 (2.9)**		11.3 (1.8)*	301
14+	59.9 (3.3)‡		23.5 (2.9)		57.6 (3.4)**		7.4 (1.8)*	217

Low or high (p <0.05) age- or school-related means are indicated by single* or double** asterisk superscripts, respectively.

^†Asc/Trich = specifically the presence of Ascaris and/or Trichuris eggs.

^††p = 0.05.

^‡p = 0.07.

^‡‡p = 0.09.