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Table 1 Perception level about ambient environments and prevalence of diseases diagnosed by the questionnaire survey

From: Health risk assessment of volatile organic compounds exposure near Daegu dyeing industrial complex in South Korea

  Degree Exposed group Controlled group Trend
N Percent N Percent p
Satisfaction with ambient environment
Foul odor Extremely serious 347 28.23% 1 0.23% < 0.01
Serious 309 25.14% 19 4.41%
Normal 474 38.57% 223 51.74%
Not serious 84 6.83% 151 35.03%
No problem 15 1.22% 37 8.58%
Ambient air Pollution Extremely serious 356 29.06% 7 1.59% < 0.01
Serious 354 28.90% 40 9.11%
Normal 457 37.31% 244 55.58%
Not serious 52 4.24% 122 27.79%
No problem 6 0.49% 26 5.92%
Satisfaction with ambient environment Extremely dissatisfied 300 24.61% 3 0.68% < 0.01
Dissatisfied 331 27.15% 19 4.31%
Normal 481 39.46% 196 44.44%
Satisfied 105 8.61% 192 43.54%
Very satisfied 2 0.16% 31 7.03%
Health impacts of DDIC No 200 16.21% 202 45.70% < 0.01
Normal 376 30.47% 139 31.45%
Slight 289 23.42% 66 14.93%
Extremely serious 369 29.90% 35 7.92%
History of diseases
Asthma   46 3.65% 7 1.56% 0.03
Anaphylactic rhinitis   141 11.18% 35 7.80% 0.04
Allergic conjunctivitis   62 4.92% 12 2.67% 0.05
Cardiovascular diseases   44 3.49% 5 1.11% 0.01
Alveobronchiolitis   56 4.44% 1 0.22% < 0.01
Allergic dermatitis   75 5.95% 11 2.45% < 0.01
Thyroid diseases   61 4.84% 10 2.23% 0.02
Cancers   30 2.40% 4 0.90% 0.05