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Table 3 Objective sensory disturbances and arsenic concentration of drinking water (ACDW)

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

 

Impairment

VLOW (< 10 ppb)

LOW (10–50 ppb)

MOD (≥ 50 ppb)

P (chi-square)

All participants (> 5 years old, n = 1526)

 Pain sensation

Yes

38 (5.0)

21 (4.3)

25 (9.0)

0.021*,a

No

726

463

253

 Vibration sensation

Yes

33 (4.3)

14 (2.9)

18 (6.5)

0.070

No

731

470

260

 Two-point discrimination

Yes

34 (4.5)

11 (2.3)

20 (7.2)

0.006*,b

No

730

473

258

Children (5–15 years old, n = 133)

 Pain sensation

Yes

3 (3.8)

0 (0)

2 (9.1)

0.243

No

77

31

20

 Vibration sensation

Yes

1 (1.3)

0 (0)

2 (9.1)

0.060

No

79

31

20

 Two-point discrimination

Yes

2 (2.5)

0 (0)

0 (0)

0.516

No

78

31

22

  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; statistically significant difference
  4. Yes = present; no = absent
  5. aVLOW and LOW < MOD
  6. bLOW < MOD (Ryan’s test, P < 0.05)