Table 4. Multivariable logistic regression analysisa: factors related to excellent knowledgeb.
| Parameter | Odds ratio | 95% CI |
| Gender | ||
| Male | 1.000 | |
| Female | 1.123 | 0.848–1.486 |
| Age group, years | ||
| 20–39 | 1.000 | |
| 40–59 | 0.734 | 0.536–1.003 |
| 60–79 | 0.527 | 0.282–0.985 |
| Education | ||
| Less than primary school | 1.000 | |
| Middle/high school | 2.238 | 0.728–6.875 |
| College graduate or higher | 3.420 | 1.087–10.762 |
| Nonresponse/refusal | 3.365 | 0.775–14.607 |
| Average monthly household income, 10 000 Won | ||
| ≤100 | 1.000 | |
| 101–300 | 0.927 | 0.442–1.945 |
| 301–500 | 0.922 | 0.431–1.972 |
| >500 | 1.212 | 0.555–2.647 |
| Nonresponse/refusal | 0.994 | 0.447–2.212 |
| Region of residence | ||
| Province | 1.000 | |
| Capital area or metropolitan city | 1.144 | 0.864–1.515 |
| Hypertension | ||
| No | 1.000 | |
| Yes | 0.923 | 0.560–1.519 |
| Diabetes mellitus | ||
| No | 1.000 | |
| Yes | 0.830 | 0.333–2.068 |
| Dyslipidemia | ||
| No | 1.000 | |
| Yes | 1.057 | 0.591–1.891 |
| Exposure to AMI-related public service announcements or promotional materials | ||
| No | 1.000 | |
| Yes | 1.490 | 1.100–2.018 |
| Knowledge of AMI | ||
| No | 1.000 | |
| Yes | 1.626 | 1.163–2.274 |
| Being aware of the need for prompt treatment for AMI | ||
| No | 1.000 | |
| Yes | 1.867 | 0.939–3.711 |
AMI, acute myocardial infarction; CI, confidence interval.
The analysis was performed excluding subjects with direct (personal history of AMI) or indirect experience of AMI (diagnosis in family members or relatives or neighbors).
aThe P value of the Hosmer-Lemeshow goodness-of-fit tests was >0.05.
bIncludes five symptoms of AMI (a response of “Yes”), the trap question (a response of “No” or “I do not know” to the trap question was counted), and appropriate response (calling an ambulance).