Table 2.

Unadjusted associations of demographic, psychosocial, and clinical characteristics with estimated physical activity on Day 30 post-discharge for an ACS hospitalization

	% difference in activity (95% confidence limits)	p-value
Age, per 10-year increase	−15% (−21, −9)	<0.0001
Men	16% (−4, 41)	0.13
Body mass index (kg/m2)	−1% (−3, 1)	0.26
Hispanic	−9% (−24, 11)	0.36
Black	−16% (−33, 7)	0.16
Charlson comorbidity index	−8% (−12, −2)	0.01
Chronic lung disease	−16% (−37, 12)	0.24
Acute coronary syndrome
ST elevation myocardial infarction	(reference)	0.59
Non ST elevation myocardial infarction	−7% (−29, 23)
Unstable angina	−12% (−31, 13)
Index acute coronary syndrome hospitalization
Treated with percutaneous coronary angioplasty	26% (2, 55)	0.04
Length of hospital stay, days	−6% (−8, −3)	<0.0001
Grace risk score, per 10-point increase	−6% (−9, −3)	<0.0001
Left ventricular ejection fraction, per 10% increase	−0.03% (−8, 9)	0.99
Left ventricular ejection fraction < 40%	−2% (−29, 36)	0.92
History of cardiovascular diseases and related procedures
Myocardial infarction	−13% (−29, 6)	0.17
Percutaneous coronary angioplasty	4% (−13, 26)	0.66
Coronary artery bypass grafting	−9% (−30, 18)	0.46
Stroke	−38% (−62, −0.4)	0.051
Peripheral arterial disease	−33% (−57, 4)	0.07
Congestive heart failure	−6% (−31, 29)	0.71
New York Heart Association class III/IV	−2% (−48, 19)	0.26
History of chronic angina	−4% (−21, 15)	0.65
Psychosocial symptoms and social support
Beck Depression Inventory (per 5-point increase)	−5% (−10, 1)	0.12
Beck Depression Inventory > 10	−9% (−24, 10)	0.32
Anergia	−20% (−34, −3)	0.03
HADS-A (per 1 point increase)	1% (−2, 4)	0.43
No partner or spouse	−24% (−37, −10)	0.003
Low perceived social support	−3% (−28, 30)	0.84

HADS-A – anxiety subscale of the Hospital Anxiety and Depression Scale