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Table 1 Patient characteristics in genetic sub-study participants versus non-participants

From: Factors influencing patient willingness to participate in genetic research after a myocardial infarction

 

Consented to use of DNA

 
 

Yes (n = 3,484)

No (n = 856)

P-value

Demographics

   

   Age

58.9 ± 12.2

59.8 ± 12.7

0.038

   White/Caucasian race

2,342 (67.4%)

573 (67.3%)

0.981

   Male

2,347 (67.4%)

551 (64.4)

0.095

   Language

  

0.293

English

3,353 (98.4%)

823 (97.9%)

 

Spanish

55 (1.6%)

18 (2.1%)

 

Missing

76

15

 

   Ethnicity

  

0.870

Hispanic/latino

217 (6.4%)

54 (6.6%)

 

Non-hispanic/latino

3,175 (93.6%)

770 (93.4%)

 

Unknown

92

32

 

   Low social support

612 (18.3%)

109 (13.1%)

< 0.001

Missing

133

23

 

   REALM-R score ≤ 6

844 (28.5%)

170 (28.1%)

0.823

   NA, missing, or unknown

423

250

 

Socio-economic status

   

   Completed high school

2,764 (79.8%)

656 (76.9%)

0.058

   History of avoiding medical care due to cost

904 (26.5%)

184 (21.7%)

0.004

   End-of-month financial situation

  

<0.001

Some money left over

1,380 (40.4%)

397 (47.3%)

 

Just enough to make ends meet

1,297 (37.9%)

295 (35.1%)

 

Not enough to make ends meet

741 (21.7%)

148 (17.6%)

 

Medical history

   

   BMI

29.8 ± 10.2

29.0 ± 6.5

0.025

   Chronic heart failure

302 (8.7%)

70 (8.2%)

0.646

   Dyslipidemia

1,721 (49.4%)

407 (47.5%)

0.332

   Hypertension

2,318 (66.5%)

575 (67.2%)

0.722

   Prior MI

710 (20.4%)

202 (23.6%)

0.038

   Cancer

250 (7.2%)

62 (7.2%)

0.946

   Diabetes

1,068 (30.7%)

268 (31.3%)

0.710

Presentation

   

   Final MI diagnosis

  

0.568

   STEMI

1,475 (42.3%)

383 (44.7%)

 

   NSTEMI

1,979 (56.8%)

465 (54.3%)

 

   BBB/uncertain type

7 (0.2%)

2 (0.2%)

 

   Patient not diagnosed with MI

23 (0.7%)

6 (0.7%)

 

   Peak troponin

29.3 ± 76.6

25.6 ± 58.1

0.187

Medications (arrival and discharge)

   

   Aspirin on arrival

1,431 (41.1%)

353 (41.2%)

0.930

   Beta blocker at DC

3,109 (89.7%)

776 (91.4%)

0.132

   Thienopyridine on Arrival

433 (12.4%)

113 (13.2%)

0.541

   Statin at DC

3,030 (87.4%)

744 (87.6%)

0.852

Processes of care

   

   In-hospital cardiac catheterization

3,222 (92.5%)

777 (90.8%)

0.096

   In-hospital revascularization

2,498 (71.7%)

618 (72.2%)

0.772

   Enrolled in other study

326 (9.4%)

70 (8.2%)

0.283

   Length of stay

5.6 ± 6.4

6.0 ± 8.90

0.207

Health Status

   

   SAQ Quality of Life score

62.2 ± 23.6

67.5 ± 23.3

< 0.001

   SAQ Angina Stability score

43.8 ± 21.8

47.1 ± 20.6

< 0.001

   SAQ Physical Limitation score

85.0 ± 22.6

88.4 ± 19.6

< 0.001

   SF-12v2 Mental Component score

49.6 ± 11.5

50.0 ± 11.6

0.411

   SF-12v2 Physical Component score

42.0 ± 12.4

42.8 ± 12.5

0.094

   PHQ-9 depression severity

  

<0.001

Not clinically depressed

1,763 (54.4%)

539 (65.7%)

 

Mild depression

831 (25.6%)

170 (20.7%)

 

Moderate depression

376 (11.6%)

72 (8.8%)

 

Moderately severe depression

191 (5.9%)

27 (3.3%)

 

Severe depression

81 (2.5%)

12 (1.5%)

 

Missing

242

36

 

GRACE 6 m Mortality Risk score

100.0 ± 29.81

103.0 ± 31.1

0.008

  1. Baseline patient characteristics are listed in the left-most column, with the quantities for those that participated in the genetic study, those that did not, and the P-value for difference between the two in the subsequent three columns. Categorical variables are shown as the number of subjects with that characteristic, followed by the proportion this represents (percentage) in parentheses. For variables that have subcategories, each subcategory and the number and proportion of subjects in that group is shown. Continuous variables are shown as the mean ± the standard deviation. Categorical variables were compared using chi-square or Fisher's exact test. Continuous variables were compared using Student's t-test. BBB, bundle branch block; BMI, body mass index; DC,; GRACE, Global Registry of Acute Coronary Events; NA, not applicable; NSTEMI, non-ST elevation myocardial infarction; PHQ, Patient Health Questionnaire; SAQ, Seattle Angina Questionaire; SF, Short Form; STEMI, ST elevation myocardial infarction.