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Table 1 Demographic and clinical characteristics of people with and without myocardial infarction

From: Gout and the risk of myocardial infarction in older adults: a study of Medicare recipients

  All episodes Myocardial infarction during follow-up p value
No Yes
Total, N 1,733,613a 1,719,334 14,279  
Age, mean (SD) 75.3 (7.6) 75.3 (7.6) 77.0 (7.4) < 0.0001
Gender, N (%)     < 0.0001
 Male 734,540 (42.4%) 727,667 (42.3%) 6873 (48.1%)  
 Female 999,073 (57.6%) 991,667 (57.7%) 7406 (51.9%)  
Race/ethnicity, N (%)     0.18
 White 1,493,475 (86.1%) 1,481,232 (86.2%) 12,243 (85.7%)  
 Black 142,284 (8.2%) 141,052 (8.2%) 1232 (8.6%)  
 Other/unknown 97,854 (5.6%) 97,050 (5.6%) 804 (5.6%)  
Charlson–Romano comorbidity score
 0 913,332 (52.7%) 909,183 (52.9%) 4149 (29.1%) < 0.0001
 1 174,551 (10.1%) 172,711 (10.0%) 1840 (12.9%)  
 ≥ 2 645,730 (37.2%) 637,440 (37.1%) 8290 (58.1%)  
Charlson–Romano comorbidity score, mean (SD) 1.60 (2.39) 1.59 (2.38) 2.71 (2.79) < 0.0001
Charlson–Romano comorbidities
 Myocardial infarctionb 65,668 (3.8%) 64,977 (3.8%) 0 (0%) < 0.0001
 Heart failure 202,190 (11.7%) 199,011 (11.6%) 3179 (22.3%) < 0.0001
 Peripheral vascular disease 168,646 (9.7%) 165,601 (9.6%) 3045 (21.3%) < 0.0001
 Cerebrovascular disease 168,696 (9.7%) 166,159 (9.7%) 2537 (17.8%) < 0.0001
 Dementia 78,238 (4.5%) 77,698 (4.5%) 540 (3.8%) < 0.0001
 Chronic pulmonary disease 270,419 (15.6%) 267,014 (15.5%) 3405 (23.8%) < 0.0001
 Connective tissue disease 48,195 (2.8%) 47,571 (2.8%) 624 (4.4%) < 0.0001
 Peptic ulcer disease 32,778 (1.9%) 32,371 (1.9%) 407 (2.9%) < 0.0001
 Mild liver disease 8543 (0.49%) 8472 (0.49%) 71 (0.50%) 0.94
 Diabetes 319,836 (18.4%) 314,635 (18.3%) 5201 (36.4%) < 0.0001
 Diabetes with end organ damage 94,249 (5.4%) 92,168 (5.4%) 2081 (14.6%) < 0.0001
 Hemiplegia 14,339 (0.83%) 14,164 (0.82%) 175 (1.2%) < 0.0001
 Renal failure/disease 59,280 (3.4%) 58,007 (3.4%) 1273 (8.9%) < 0.0001
 Any tumor, leukemia, or lymphoma 174,684 (10.1%) 172,971 (10.1%) 1713 (12.0%) < 0.0001
 Moderate or severe liver disease 2002 (0.12%) 1986 (0.12%) 16 (0.11%) 0.9
 Metastatic cancer 18,009 (1.0%) 17,895 (1.0%) 114 (0.80%) 0.004
 AIDS 549 (0.03%) 543 (0.03%) 6 (0.04%) 0.49
Hypertension 836,875 (48.3%) 827,183 (48.1%) 9692 (67.9%) < 0.0001
Hyperlipidemia 602,546 (34.8%) 595,936 (34.7%) 6610 (46.3%) < 0.0001
Coronary artery disease 302,088 (17.4%) 297,025 (17.3%) 5063 (35.5%) < 0.0001
Obesity 36,034 (2.1%) 35,602 (2.1%) 432 (3.0%) < 0.0001
  1. aMet eligibility criteria and did not have MI in the baseline 365-day period; MI identified by the presence of two separate claims 4-weeks apart each with an ICD-9-CM code of 410.x1 during the study period of 2006–2012, with an exclusion of any person with ICD-9-CM code of 410.xx or 412.xx during the baseline 365-day period of 1/1/2005 to 12/31/2005
  2. bIdentified by the presence of ICD-9-CM code of 410.x or 412.x in the baseline 365-day period in 2005
  3. ICD-9-CM International Classification of Diseases, ninth revision, common modification, MI myocardial infarction, SD standard deviation