Table 2. Distribution of Demographic and Clinical Variables for PCI Patients by BMI Groups
CharacteristicsNormal (18.5–24.9)Overweight (25–29.9)Obese Class I (30–34.9)Obese Class II (35–39.9)Obese Class III (≥40)P Value
Participants, No. (%)6629 (21.9)12 591 (41.6)7405 (24.5)2506 (8.3)1127 (3.7)
Age (SD), y65.3 (12.5)62.5 (11.8)a60.5 (11.2)a59.1 (11.0)a58.5 (10.2)a<0.001
Men, No. (%)4627 (69.8)10 175 (80.8)a5869 (79.3)a1870 (74.6)a700 (62.1)a<0.001
Height, mean (SD), cm170.6 (9.7)172.5 (9.0)a172.1 (9.5)a171.0 (10.2)a167.8 (10.9)a<0.001
Weigh, mean (SD), kg67.1 (9.2)82.1 (9.7)a95.4 (11.2)a108.5 (13.1)a124.2 (17.0)a<0.001
Concomitant disease, No. (%)
Cerebrovascular disease375 (5.7)546 (4.3)a312 (4.2)a95 (3.8)a48 (4.3)<0.001
Congestive heart failure528 (8.0)785 (6.2)a493 (6.7)a207 (8.3)139 (12.3)a<0.001
Diabetes mellitus1039 (15.7)2352 (18.7)a1981 (26.8)a885 (35.3)a536 (47.6)a<0.001
Dialysis64 (1.0)75 (0.6)a40 (0.5)a18 (0.7)12 (1.1)0.008
Hyperlipidemia4274 (64.5)9042 (71.8)a5537 (74.8)a1894 (75.6)a886 (78.6)a<0.001
Hypertension3813 (57.5)7851 (62.4)a5232 (70.7)a1593 (77.9)a909 (80.7)a<0.001
Liver or gastrointestinal disease465 (7.0)858 (6.8)452 (6.1)161 (6.4)75 (6.7)0.220
Malignancy274 (4.1)433 (3.4)214 (2.9)a65 (2.6)a32 (2.8)<0.001
Peripheral vascular disease495 (7.5)798 (6.3)a531 (7.2)165 (6.6)78 (6.9)0.031
Pulmonary disease872 (13.2)1234 (9.8)a852 (11.5)a323 (12.9)220 (19.5)a<0.001
Renal disease237 (3.6)376 (3.0)216 (2.9)75 (3.0)43 (3.8)0.084
Smoking status, No. (%) b b b b <0.001
Never2754 (41.5)4800 (38.1)2552 (34.5)844 (33.7)381 (33.8)
Former smoker2410 (36.4)4170 (33.1)2518 (34.0)921 (36.8)376 (33.4)
Current smoker1465 (22.1)3621 (28.8)2335 (31.5)741 (29.6)370 (32.8)
Prior event/treatment, No. (%)
Coronary artery bypass grafting137 (2.1)253 (2.0)157 (2.1)47 (1.9)15 (1.3)0.489
Myocardial infarction946 (14.3)1725 (13.7)1059 (14.3)367 (14.6)177 (15.7)0.282
PCI272 (4.1)559 (4.4)362 (4.9)100 (4.0)43 (3.8)0.111
Prior lytic therapy503 (7.6)994 (7.9)616 (8.3)174 (6.9)73 (6.5)0.071
Indication for catheterization, No. (%) b b b b <0.001
Stable angina1106 (16.7)2506 (19.9)1533 (20.7)549 (21.9)241 (21.4)
Myocardial infarction4680 (70.6)8357 (66.4)4869 (65.8)1642 (65.5)730 (64.8)
Unstable angina764 (11.5)1550 (12.3)903 (12.2)285 (11.4)139 (12.3)
Other79 (1.2)178 (1.4)100 (1.4)30 (1.2)17 (1.5)
Ejection fraction, No. (%) b b b b <0.001
>50%3441 (51.9)7013 (55.7)4120 (55.6)1384 (55.2)565 (50.1)
35% to 50%1379 (20.8)2415 (19.2)1394 (18.8)476 (19.0)206 (18.3)
20% to 34%269 (4.1)427 (3.4)201 (2.7)66 (2.6)37 (3.3)
<20%54 (0.8)95 (0.8)37 (0.5)13 (0.5)8 (0.7)
Not performed680 (10.3)1143 (9.1)994 (13.4)214 (8.5)176 (15.6)
Missing806 (12.2)1498 (11.9)438 (22.6)353 (14.1)77 (23.1)
Extent of coronary disease, No. (%) b b b b <0.001
Low risk4192 (63.3)8012 (63.6)4882 (65.9)1701 (67.9)778 (69.1)
High risk2417 (36.4)4537 (36.1)2506 (33.8)794 (31.7)345 (30.7)
Missing20 (0.3)42 (0.3)17 (0.2)11 (0.4)4 (0.4)
  • PCI indicates percutaneous coronary intervention. Low risk indicates lesions with <50% stenosis, 1‐ or 2‐vessel disease. High risk indicates 2‐vessel disease with proximal left anterior descending artery or left main artery disease, 3‐vessel disease, or left main artery disease.

  • a Subgroup significantly different from the normal BMI group (P<0.05).

  • b Significant difference in the distribution of the categories compared with normal BMI.