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Table 2 Characteristics of individual participants within the clusters randomised to the intervention or control arm of the Mikono Safi trial, Kagera region, Tanzania

From: Hand hygiene intervention to optimise soil-transmitted helminth infection control among primary school children: the Mikono Safi cluster randomised controlled trial in northwestern Tanzania

 

Intervention n (%)

Control n (%)

Total n (%)

Baseline survey

Number of participants at baseline

1582

1581

3163

Median [IQR] age of participants in years

10 (8–12)

10 (8–12)

10 (8–12)

Female sex

807 (51)

809 (51)

1616 (51)

Household possessions

 Farm/land

1500 (96)

1346 (89)

2846 (92)

 Cow(s)/pig(s)/goat(s)/sheep

805 (51)

774 (51)

1579 (51)

 Television

957 (61)

1010 (67)

1967 (64)

 Gas/electric cooker

586 (37)

743 (49)

1329 (43)

 Mobile phone(s)

1508 (96)

1461 (96)

2969 (96)

 Bicycle

482 (31)

516 (34)

998 (32)

 Motor cycle

280 (18)

385 (25)

665 (22)

 Vehicle/tractor/boat

379 (24)

356 (23)

735 (24)

Main source of water at home

 In-house piped water

166 (10)

282 (18)

448 (14)

 Public owned piped water

239 (15)

264 (17)

503 (16)

 Well

99 (6)

117 (7)

216 (7)

 River/stream

1040 (66)

920 (58)

1960 (62)

 Lake

51 (3)

10 (1)

61 (2)

 Water vendor

41 (3)

38 (2)

79 (3)

 Other sources

47 (3)

38 (2)

85 (3)

Reason for handwashing the last time participant washed hands

 Had visited the toilet

1119 (71)

583 (37)

1702 (54)

 Washed before eating

608 (38)

918 (58)

1526 (48)

Participant reported ever eating soil

523 (33)

575 (36)

1098 (35)

Soil-transmitted helminth infection at baseline

 Ascaris infection

6 (0.4)

49 (3.1)

55 (1.8)

 Trichuris infection

543 (35)

529 (34)

1072 (34)

 Hookworm infection

7 (0.45)

12 (0.77)

19 (0.61)

Endline survey

Number of participants at end line

1566

1515

3081

Median [IQR] age of participants in years

10 (8-12)

10 (8–12)

10 (8–12)

Female sex

791 (51)

786 (52)

1577 (51)

Participant currently lives with

 Both parents

1024 (65)

932 (62)

1956 (63)

 Single parent

268 (17)

294 (19)

562 (18)

 Guardian

274 (17)

289 (19)

563 (18)

Participants who received worm treatment during the deworming campaign at start of the study

1457 (93)

1328 (88)

2785 (90)

Participant ever received worm treatment somewhere else rather than at school

390 (25)

421 (28)

811 (26)

Participants who had a latrine at home

1559 (99.6)

1512 (99.8)

3071 (99.7)

Type of latrine

 Latrine uses flushed water

531 (34)

519 (34)

1050 (34)

 Latrine has a hole in the floor

1231 (79)

1158 (76)

2389 (78)

 Latrine has a hole in the floor and a lid to cover the hole

421 (27)

424 (28)

845 (28)

 Latrine with a ventilation pipe

566 (36)

562 (37)

1128 (37)

Reported diarrhoea episode over the past 7 days

373 (24)

337 (22)

710 (23)

Participant reported that they had ever eaten soil

622 (40)

602 (40)

1224 (40)

Participant reported that they had ever observed worms while passing stool

728 (46)

745 (49)

1473 (48)