Table 3 Chi-square test of the risk factors associated with increased STH in children

Age (years)

0.8–1.5

0.386

 < 5

331

81 (24.5)

1.1

 ≥ 5

1095

243 (22.2)

1

Gender

0.8–1.4

0.501

 Male

881

195 (22.1)

1

 Female

545 

129 (23.7)

1.1

Family monthly income (in Afghanis)

1.0–2.5

0.056

 < 2,500 (< 30 USD)

1285

301 (23.4)

1.6

 ≥ 2,500 (≥ 30 USD)

141

23 (16.3)

1

Family size

1.2–2.1

0.001

 < 5 people

330

98 (29.7)

1.6

 ≥ 5 people

1096

226 (20.6)

1

Mother’s education

0.2–1.3

0.135

 Educated

39

5 (12.8)

1

 Uneducated

1387

319 (23.0)

0.5

Father’s (guardian of family) occupation

0.9–1.7

0.206

 Farmer

1161

256 (22.0)

1

 Non-farmer

265

68 (25.7)

1.2

House construction

2.0–8.5

 < 0.001

 Mud

1314

316 (24.0)

4.1

 Concrete

112

8 (7.1)

1

Source of drinking water

0.5–0.8

 < 0.001

 Safe

526

91 (17.3)

1

 Unsafe

900

233 (25.9)

0.6

Use of toilet

1.2–2.2

0.001

 Yes

409

69 (16.9)

1

 Open defecation

1017

255 (25.1)

1.6

Washing hands after defecating/before eating

2.4–4.6

 < 0.001

 Yes

474

51 (10.8)

1

 No

952

273 (28.7)

3.3

Walking barefoot

1.9–3.5

 < 0.001

 Yes

962

264 (27.4)

2.5

 No

464

60 (12.9)

1

Finger nails status

1.4–2.7

 < 0.001

 Trimmed

288

42 (14.6)

1

 Untrimmed

1138

282 (24.8)

1.9

Habit of nail biting

1.1–2.1

0.012

 Yes

215

63 (29.3)

1.5

 No

1211

261 (21.6)

1

Consumption of raw vegetables

1.0–2.4

0.035

 Yes

1250

295 (23.6)

1.6

 No

176

29 (16.5)

1

Habit of eating soil

0.6–2.1

0.826

 Yes

50

12 (24.0)

1.1

 No

1376

312 (22.7)

1

Domestic animals present at home

0.4–0.8

0.002

 Yes

1196

290 (24.2)

0.5

 No

230

34 (14.8)

1