Table 2.
Baseline characteristics (categorical variables)
| Variable | Total (n = 6557) | Non-obese (n = 5121) | Obese (n = 1192) |
|---|---|---|---|
| Count (%) | Count (%) | Count (%) | |
| Sex | |||
| Male | 4196 (64.0) | 3297 (64.4) | 742 (62.2) |
| Female | 2361 (36.0) | 1824 (35.6) | 450 (37.8) |
| Ethnicity | |||
| Asian | 25 (0.4) | 23 (0.4) | 2 (0.2) |
| Black | 48 (0.7) | 37 (0.7) | 11 (0.9) |
| Caucasian | 6154 (93.9) | 4825 (94.2) | 1112 (93.3) |
| Other | 79 (1.2) | 57 (1.1) | 19 (1.6) |
| Missing | 251 (3.8) | 179 (3.5) | 48 (4.0) |
| Smoking status | |||
| Never-smoker | 3254 (49.6) | 2563 (50.0) | 569 (47.7) |
| Ex-smoker > 1 y | 1721 (26.2) | 1303 (25.4) | 374 (31.4) |
| Ex-smoker < 1 y | 220 (3.4) | 172 (3.4) | 41 (3.4) |
| Current smoker | 1158 (17.7) | 939 (18.3) | 174 (14.6) |
| Missing | 204 (3.1) | 144 (2.8) | 34 (2.9) |
| Alcohol consumption | |||
| Abstinent | 3823 (58.3) | 3011 (58.8) | 686 (57.6) |
| Social | 1832 (27.9) | 1409 (27.5) | 364 (30.5) |
| Problematic | 714 (10.9) | 568 (11.1) | 113 (9.5) |
| Missing | 188 (2.9) | 133 (2.6) | 29 (2.4) |
| Physical activity | |||
| No restriction | 3791 (57.8) | 3042 (59.4) | 626 (52.5) |
| Limited | 2200 (33.6) | 1679 (32.8) | 439 (36.8) |
| Chair-ridden | 302 (4.6) | 207 (4.0) | 83 (7.0) |
| Bed-ridden | 167 (2.5) | 128 (2.5) | 32 (2.7) |
| Missing | 97 (1.5) | 65 (1.3) | 12 (1.0) |
| Hypothyroidism | |||
| Yes | 280 (4.3) | 213 (4.2) | 60 (5.0) |
| No | 5804 (88.5) | 4554 (88.9) | 1041 (87.3) |
| Missing | 473 (7.2) | 354 (7.0) | 91 (7.6) |
| Chronic glucocorticoid therapy | |||
| Yes | 444 (6.8) | 366 (7.1) | 65 (5.5) |
| No | 6031 (92.0) | 4702 (91.8) | 1117 (93.7) |
| Missing | 82 (1.3) | 53 (1.0) | 10 (0.8) |
| Solid malignancy | |||
| None | 5053 (77.1) | 3905 (76.3) | 962 (80.7) |
| Non-metastatic | 900 (13.7) | 714 (13.9.) | 159 (13.3) |
| Metastatic | 514 (7.8) | 442 (8.6) | 60 (5.0) |
| Missing | 90 (1.4) | 60 (1.2) | 11 (0.9) |
| Hematologic malignancy | |||
| None | 6085 (92.8) | 4744 (92.6) | 1126 (94.5) |
| ALL | 28 (0.4) | 25 (0.5) | 3 (0.3) |
| AML | 64 (1.0) | 54 (1.1) | 9 (0.8) |
| CLL | 34 (0.5) | 27 (0.5) | 4 (0.3) |
| MM | 35 (0.5) | 28 (0.5) | 5 (0.4) |
| NHL | 70 (1.1) | 59 (1.2) | 11 (0.9) |
| Other | 157 (2.4) | 128 (2.5) | 25 (2.1) |
| Missing | 84 (1.3) | 56 (1.1) | 9 (0.8) |
| Dementia | |||
| Yes | 139 (2.1) | 116 (2.3) | 18 (1.5) |
| No | 6355 (96.9) | 4967 (97.0) | 1168 (98.0) |
| Missing | 63 (1.0) | 38 (0.7) | 6 (0.5) |
| HIV/AIDS | |||
| Yes | 43 (0.7) | 43 (0.8) | 0 (0.0) |
| No | 6427 (98.0) | 5020 (98.0) | 1182 (99.2) |
| Missing | 87 (1.3) | 58 (1.1) | 10 (0.8) |
| Cardiovascular disease | |||
| Yes | 3235 (49.3) | 2442 (47.7) | 679 (57.0) |
| No | 3253 (49.6) | 2635 (51.5) | 507 (42.5) |
| Missing | 69 (1.1) | 44 (0.9) | 6 (0.5) |
| Hypertension | |||
| Yes | 2866 (43.7) | 2081 (40.6) | 696 (58.4) |
| No | 3603 (54.9) | 2981 (58.2) | 487 (40.9) |
| Missing | 88 (1.3) | 59 (1.2) | 9 (0.8) |
| Diabetes mellitus | |||
| Yes | 1281 (19.5) | 816 (15.9) | 421 (35.3) |
| No | 5194 (79.2) | 4251 (83.0) | 762 (63.9) |
| Missing | 82 (1.3) | 54 (1.1) | 9 (0.8) |
| Chronic kidney disease | |||
| Yes | 1317 (20.1) | 974 (19.0) | 305 (25.6) |
| No | 5149 (78.5) | 4085 (79.8) | 877 (73.6) |
| Missing | 91 (1.4) | 62 (1.2) | 10 (0.8) |
| Chronic liver disease | |||
| Yes | 408 (6.2) | 312 (6.1) | 80 (6.7) |
| No | 6058 (92.4) | 4748 (92.7) | 1001 (92.4) |
| Missing | 91 (1.4) | 31 (1.2) | 11 (0.9) |
| Chronic pulmonary disease | |||
| Yes | 994 (15.2) | 741 (14.5) | 225 (18.9) |
| No | 5471 (83.4) | 4318 (84.3) | 956 (80.2) |
| Missing | 92 (1.4) | 62 (1.2) | 11 (0.9) |
| Type of admission | |||
| Elective surgery | 2727 (41.6) | 2094 (40.9) | 550 (46.1) |
| Urgent surgery | 989 (15.1) | 776 (15.2) | 168 (14.1) |
| Trauma/burns | 214 (3.3) | 170 (3.3) | 22 (1.8) |
| Monitoring | 1503 (22.9) | 1198 (23.4) | 247 (20.7) |
| Organ failure | 1097 (16.7) | 864 (16.9) | 202 (16.9) |
| Missing | 27 (0.4) | 19 (0.4) | 3 (0.3) |
AIDS acquired immunodeficiency syndrome, AML acute myeloid leukemia, ALL acute lymphoblastic leukemia, CLL chronic lymphocytic leukemia, HIV human immunodeficiency virus, MM multiple myeloma, NHL non-Hodgkin lymphoma, y year