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Table 2 Personal hygienic practice toward ALA among patients compared with E. histolytica antibody negative (disease free) individuals

From: Epidemiology and factors associated with amoebic liver abscess in northern Sri Lanka

Variable Categories Patients (Cases) E. histolytica serum antibody negative Individuals (controls) Statistics
N = 346 % with CI N = 100 % with CI
Latrine facilities No facility/open air defecation 3 0.9
(0.2–2.3)
0 0 Pearson’s chi-square
with Yates’s correction = 0.927
P = 0.336
Using pits 21 6.1
(3.9–9.0)
3 3
(0.8–7.9)
Water seal latrine 322 93.1
(90.0–95.4)
97 97
(92.1–99.2)
Distance between latrine and drinking water source roughly 50 ft 306 88.4
(84.7–91.5)
86 86
(78.1–91.8)
Pearson’s chi-square with Yates’s correction = 0.235
P = 0.628
> 50 ft 40 11.6
(8.5–15.7)
14 14
(8.2–21.9)
Drinking habit Fresh water 346 100
(99.1–100)
100 100
(99.1–100)
 
Eating habit Rarely eat outside the house (cafeteria) 78 22.5
(18.4–27.2)
33 33
(24.3–42.6)
Pearson’s chi-square
with Yates’s correction = 3.995
P = 0.046
Sometimes eat in cafeteria 268 77.5
(72.8–81.6)
67 67
(57.4–75.7)
Hand washing before eat sometimes wash with soap and water before eating 199 57.5
(52.3–62.7)
58 58
(48.2–67.4)
Pearson’s chi-square
with Yates’s correction = 0.000
P = 1.000
Rarely/Not washing hand with soap and water before eating 147 42.5
(37.3–47.7)
42 42
(32.6–51.8)
Hand washing after defecation sometimes wash with soap and water 340 98.3
(96.4–99.3)
98 98
(93.5–99.7)
Pearson’s chi-square
with Yates’s correction = 0.000
P = 1.000
rarely/Not washing with soap water 6 1.7
(0.7–3.6)
2 2
(0.3–6.5)
Nails cutting habit Regularly cutting nails 1 0.3
(0.000–1.4)
0 0 T-test (trend test based on contrasts) [Barlow et al.]:
chi-sq. = 0.267 [DF = 1] 2-sided P = 0.605 for trend in a given direction: P = 0.303
sometimes cutting nails 238 68.8
(63.8–73.5)
68 68
(58.4–76.6)
cutting nails after a long time 107 30.9
(26.2–35.9)
32 34
(23.4–41.6)