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. 2019 Jul 18;16(14):2564. doi: 10.3390/ijerph16142564

Table 2.

Chi-square test of independence for certain risk factors of Coronary Artery Disease (CAD).

Variables, n, (%) Coronary Artery Disease (CAD) (N = 1829) Chi-Square Value p-Value
CONTSUB 1 χ2 = 25.016 p < 0.001 a
Schedule II 14 (0.9%)
Other Schedules c 1594 (99.1%)
CONTSUB 2 χ2 = 15.193 p < 0.001 a
Schedule II 10 (0.7%)
Other Schedules 1442 (99.3%)
CONTSUB 3 χ2 = 6.553 p = 0.010 b
Schedule II 12 (0.9%)
Other Schedules 1358 (99.1%)
Alcohol misuse, abuse or dependence 21 (1.1%) χ2 = 5.927 p = 0.015 b
Type 2 Diabetes 352 (19.2%) χ2 =539.858 p < 0.001 a
Hyperlipidemia 963 (52.7%) χ2 = 1943.517 p < 0.001 a
Hypertension 1268 (69.3%) χ2 = 1777.115 p < 0.001 a
Obesity 232 (12.7%) χ2 = 123.778 p < 0.001 a
Substance Abuse 55 (3.0%) χ2 = 6.637 p = 0.010 b

ap = 0.000, b p < 0.05, c Other Schedules contained controlled substances schedules III, IV, and V as classified by the Controlled Substances Act (CSA). Date source: Center for Diseases Control and Prevention. National Ambulatory Health Care Data: Data Sets and Documentation. (November 30, 2017). Accessed September 27, 2018. https://www.cdc.gov/nchs/ahcd/datasets_documentation_related.htm [13].