Unadjusted model Hierarchical Linear Model
  β 95% CI β 95% CI
Metabolic syndrome condition
BMI<27
BMI≥27 no metabolic syndrome
metabolic syndrome 		ref
-0.06
-0.15		 -0.17, 0.05
-0.22, -0.09		 ref
-0.20
-0.28		 -0.29, -0.10
-0.34, -0.23
Sessions attended
7 to 18
19 to 24
25 to 36		     ref
0.19
0.55		 0.09, 0.30
0.46, 0.64
Congestive heart failure     -0.28 -0.37,-0.20
History of claudication     -0.30 -0.39, -0.21
Admitting diagnosis
Valve
Angina
PCI
MI
CABG 		    ref
0.35
0.74
0.62
0.44		 0.21, 0.49
0.60, 0.87
0.49, 0.75
0.31, 0.56
Ejection fraction
Normal range
Below normal
Unknown 		    ref
-0.01
-0.14		 -0.08, 0.06
-0.22, -0.06
History of cardiovascular event     -0.26 -0.33, -0.19
Gender1     0.67 0.61, 0.72
Age2     -0.03 -0.03, -0.03
*variance component hospital=0.38 (CI:0.09, 1.5)
BMI=body mass index; PCI=percutaneous coronary intervention; MI=myocardial infarction; CABG=coronary artery bypass graft
1reference=female gender; 2unit change per year of increase in age
Table 3: Rate of Change in Exercise Capacity for Cardiac Rehabilitation Participants, 250.