Table 1 Comparison of SF-36 Survey Responders to Non-Responders
From: Assessing response bias from missing quality of life data: The Heckman method
Variables | SF 36 responders | SF 36 non-responders | P-value |
|---|---|---|---|
Demographics | |||
Mean patient age | 65.5 | 62.8 | <.01 |
Male gender | 97.7% | 97.5% | 0.69 |
Caucasian race | 78.4% | 80.0% | 0.21 |
Prior Cardiac History | |||
Hx of MI | 38.0% | 36.6% | 0.33 |
Hx of Chronic heart failure | 18.2% | 18.3% | 0.90 |
Hx of Coronary artery bypass graft surgery | 26.3% | 23.0% | 0.01 |
Hx of Percutaneous coronary intervention | 17.2% | 12.6% | <.01 |
Prior Non-Cardiac History | |||
History of trauma | 0.4% | 0.7% | 0.31 |
Substance or alcohol abuse | 15.6% | 21.0% | <.01 |
Current smoker | 35.7% | 43.0% | <.01 |
Dementia | 2.0% | 3.3% | <.01 |
COPD | 29.7% | 26.1% | 0.01 |
Stroke | 10.8% | 13.2% | 0.01 |
Depression | 28.7% | 40.5% | <.01 |
Arthritis | 54.8% | 54.4% | 0.92 |
Diabetes mellitus | 31.6% | 32.0% | 0.73 |
Peptic ulcer disease | 11.1% | 9.6% | 0.26 |
Events during Index Admission and Interim Period* | |||
Coronary revascularization during index admission | 26.6% | 23.9% | 0.05 |
Cardiogenic shock | 1.1% | 1.1% | 0.94 |
Hypotensive episode | 8.7% | 9.2% | 0.59 |
Do not resuscitate order | 1.2% | 2.9% | <.01 |
Positive stress test | 12.1% | 11.1% | 0.32 |
Admitted to Tertiary VA | 63.9% | 69.5% | 0.01 |
ST-segment elevation MI on ECG | 19.0% | 21.4% | 0.05 |
Mean serum creatinine | 1.17 | 1.19 | 0.58 |
Left bundle branch block on ECG | 3.6% | 3.2% | 0.52 |
Cardiac catheterization during index admission | 33.4% | 31.4% | 0.16 |
Discharge diagnosis Unstable Angina (vs. MI) | 49.4% | 46.5% | 0.06 |