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Table 1 Subjective neurological symptoms and arsenic concentration in drinking water (ACDW)

From: Peripheral neuropathy induced by drinking water contaminated with low-dose arsenic in Myanmar

 

Symptom

VLOW (< 10 ppb)

LOW (10–50 ppb)

MOD (≥ 50 ppb)

P (chi-square)

All participants (≥ 5 years old, N = 1867)

 Smell defects

Yes

13 (1.4)

11 (1.9)

3 (0.9)

0.446

No

922

573

345

 Visual defects

Yes

298 (31.9)

188 (32.2)

100 (28.7)

0.616

No

637

396

248

 Taste defects

Yes

12 (1.3)

11 (1.9)

8 (2.3)

0.401

No

923

573

340

 Hearing defects

Yes

63 (6.7)

46 (7.8)

22 (6.4)

0.639

No

872

540

324

 Feeling of weakness

Yes

122 (13.0)

110 (18.8)

54 (15.5)

0.020*,a

No

813

474

294

 Chronic numbness or pain

Yes

191 (20.4)

151 (25.9)

79 (22.7)

0.095

No

744

433

269

Children (5–15 years old, n = 456)

 Smell defects

Yes

0 (0)

0 (0)

0 (0)

 

No

240

126

90

 

 Visual defects

Yes

8 (3.3)

4 (3.2)

1 (1.1)

0.549

No

232

122

89

 

 Taste defects

Yes

0 (0)

0 (0)

0 (0)

 

No

240

126

90

 

 Hearing defects

Yes

2 (0.8)

1 (0.8)

2 (2.2)

0.523

No

238

125

88

 

 Feeling of weakness

Yes

8 (3.3)

2 (1.6)

3 (3.3)

0.614

No

232

124

87

 

 Chronic numbness or pain

Yes

9 (3.8)

2 (1.6)

5 (5.6)

0.295

No

231

124

85

 
  1. Numbers indicate the number of participants
  2. Numbers in parentheses indicate the percentage of “yes” participants in each ACDW group
  3. Statistical analyses were performed using the chi-square test. *P < 0.05 indicates a statistically significant difference
  4. Yes = present; no = absent
  5. aVLOW < LOW (Ryan’s test, P < 0.05)