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Table 2 Number (%) of schoolchildren infected with helminths and intestinal protozoa in western Tajikistan, early 2009

From: Prevalence and risk factors of helminths and intestinal protozoa infections among children from primary schools in western Tajikistan

Parasite Overall (n = 594) Boys (n = 307) Girls (n = 287) χ2 P-value School
no. 1 (n = 64)
School
no. 2
(n = 59)
School
no. 3
(n = 59)
School
no. 4
(n = 62)
School
no. 5
(n = 50)
School
no. 6
(n = 54)
School
no. 7
(n = 67)
School
no. 8
(n = 68)
School
no. 9
(n = 60)
School
no. 10
(n = 51)
Helminth                
   Hymenolepis nanaa, b 153 (25.8) 74 (24.1) 79 (27.5) 0.91 0.341 11 (17.2) 19 (32.2) 17 (28.8) 13 (21.0) 19 (38.0) 11 (20.4) 23 (34.3) 23 (33.8) 6 (10.0) 11(21.6)
   Ascaris lumbricoidesa, b 26 (4.4) 16 (5.2) 10 (3.5) NA 0.323 3 (4.7) 0 1 (1.7) 0 8 (16.0) 4 (7.4) 4 (6.0) 4 (5.9) 0 2 (3.9)
   Hookworma, b 21 (3.5) 10 (3.3) 11 (3.8) NA 0.825 0 4 (6.8) 0 0 5 (10.0) 2 (3.7) 3 (4.5) 2 (2.9) 4 (6.7) 1 (2.0)
   Enterobius vermicularisa, b 15 (2.5) 4 (1.3) 11 (3.8) NA 0.066 2 (3.1) 1 (1.7) 6 (10.2) 1 (1.6) 2 (4.0) 0 2 (3.0) 1 (1.5) 0 0
   Trichuris trichiuraa, b 8 (1.4) 2 (0.7) 6 (2.1) NA 0.164 0 5 (8.5) 0 0 3 (6.0) 0 0 0 0 0
   Fasciola hepaticaa, b 3 (0.5) 2 (0.7) 1 (0.4) NA 0.999 1 (1.6) 1 (1.7) 0 0 0 0 1 (1.5) 0 0 0
   Hymenolepis diminutaa 3 (0.5) 2 (0.7) 1 (0.4) NA 0.999 0 0 0 0 0 2 (3.7) 0 0 1 (1.7) 0
   Dicrocoelium dendriticuma 1 (0.2) 0 1 (0.3) NA 0.483 0 0 0 0 0 0 0 0 1 (1.7) 0
   Any helminth 190 (32.0) 91 (29.6) 99 (34.5) 1.61 0.205 15 (23.4) 21 (35.6) 22 (37.3) 13 (21.0) 27 (54.0) 14 (25.9) 29 (43.3) 26 (38.2) 11 (18.3) 12 (23.5)
   Any soil-transmitted helminth 51 (8.6) 27 (8.8) 24 (0.4) NA 0.851 3 (4.7) 9 (15.3) 1 (1.7) 0 13 (26.0) 5 (9.3) 7 (10.5) 6 (8.8) 4 (6.7) 3 (5.9)
Intestinal protozoon                
   Entamoeba colic 390 (65.7) 196 (63.8) 194 (67.6) 0.93 0.336 41 (64.1) 36 (61.0) 47 (79.7) 42 (67.7) 36 (72.0) 38 (70.4) 47 (70.2) 41 (62.3) 31 (51.7) 31 (60.8)
   Giardia intestinalisa 157 (26.4) 82 (26.7) 75 (26.1) 0.03 0.873 7 (10.9) 24 (40.7) 16 (27.1) 17 (27.4) 12 (24.0) 12 (22.2) 22 (32.8) 16 (23.5) 18 (30.0) 13 (25.5)
   Entamoeba histolytica/E. dispara 154 (25.9) 82 (26.7) 72 (25.1) 0.20 0.652 19 (29.7) 13 (22.0) 16 (27.1) 11 (17.7) 19 (38.0) 14 (25.9) 21 (31.3) 20 (29.4) 10 (16.7) 11 (21.6)
   Blastocystis hominisd 118 (19.9) 63 (20.5) 55 (19.2) 0.17 0.679 12 (18.8) 11 (18.6) 13 (22.0) 11 (17.7) 9 (18.0) 8 (14.8) 15 (22.4) 17 (25.0) 13 (21.7) 9 (17.7)
   Endolimax nanac 118 (19.9) 61 (19.9) 57 (19.9) 0.00 0.998 13 (20.3) 11 (18.6) 18 (30.5) 7 (11.3) 9 (18.0) 7 (13.0) 19 (28.4) 17 (25.0) 8 (13.3) 9 (17.7)
   Iodamoeba bütschliic 29 (4.9) 13 (4.2) 16 (5.6) NA 0.455 4 (6.3) 0 6 (10.1) 0 4 (8.0) 6 (11.1) 4 (6.0) 3 (4.4) 0 2 (3.9)
   Entamoeba hartmannic 28 (4.7) 14 (4.6) 14 (4.9) NA 0.855 4 (6.3) 3 (5.1) 2 (3.4) 4 (6.5) 4 (8.0) 2 (3.7) 3 (4.5) 3 (4.4) 1 (1.7) 2 (3.9)
   Chilomastix mesnilic 25 (4.2) 15 (4.9) 10 (3.5) NA 0.677 2 (3.1) 3 (5.1) 2 (3.4) 0 0 8 (14.8) 4 (6.0) 5 (7.4) 1 (1.7) 0
   Any intestinal protozoa 497 (83.7) 255 (83.1) 242 (84.3) 0.17 0.678 53 (82.8) 53 (89.8) 54 (91.5) 50 (80.7) 44 (88.0) 46 (85.2) 60 (89.6) 56 (82.4) 42 (70.0) 39 (76.5)
   Any pathogenic intestinal protozoa 280 (47.1) 148 (48.2) 132 (46.0) 0.29 0.589 25 (39.1) 33 (55.9) 29 (58.0) 26 (41.9) 29 (58.0) 22 (40.7) 36 (53.7) 33 (48.5) 26 (43.3) 21 (41.2)
Overall infection prevalence with pathogenic intestinal parasites 375 (63.1) 195 (63.5) 180 (62.7) 0.04 0.840 34 (53.1) 42 (71.2) 40 (67.8) 35 (56.5) 38 (76.0) 29 (53.7) 48 (71.6) 46 (67.7) 34 (56.7) 29 (56.9)
  1. a Pathogenic
  2. b Pooled results from duplicate Kato-Katz thick smear readings and ether-concentration test results
  3. c Non-pathogenic
  4. d Suspected pathogenic
  5. NA P-value based on Fisher's exact test