A decade ago a survey on the population-base incidence rate of anthracite coal gas (mainly carbon monoxide) poisonig in Seoul area was investigated, resulting in the incidence rate of 306/10,000 risk population and 1 death/10,000.
Another survey on the carbon monoxide poisoning was investigated during 1 year period from Apr. 1983 to Mar. 1984. Total subjects of risk population were 67,740 households covering 353,287 persons.
The major findings of this survey are as follows:
1. Household-base incidence rate was 8.4°a; spell--base 10.4°0.
2. The incidence rate was the highest in houses having each of slate roof, cement wall, vinyl floor of bedroom and direct ´ondol´ heating system.
3. Average 2. 1 person was attacked from one incidence of. the poisoning; severity-wise person-base incidence rates per 10, 000 were 352 in mild poisoning, 54 in severe poisoning and 1.4 in death - overall incidence rate 407. Several facts were identified which supported that this figure was moderately underestimated. As the incidence of the poisoning is affected by socioeconomic and environmental factors, it is natural that one expects the incidence will decrease in proportion to genernal improvement of the above factors. Thus the results of these two surveys seemed preposterous. But further study suggested that the incidence rate (306/10, 000) decade before had been significantly underestimated and corrected-rate should have been 478/10,000 level.
4. Age and sex distribution by the degree of the poisoning was uniform with little statistical difference; overall incidence rates by sex were 339/10, 000 in male and 475/10, 000 in female with significant statistical difference (p<. 01).
5. 5.3% of the patients were treated at hospital or local clinic; 3.0% of the patients were hospitalized. Admission rate in comatose patient(severe poisoning) was 14.2%. In conclusion, carbon monoxide poisoning remains a major health problem by now.
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