Table 1.
Baseline characteristics of propensity score-matched cohort of patients with bariatric surgery and controls
| Bariatric surgery (n = 917) |
Controls (n = 1811) | P§ | |
|---|---|---|---|
| Sex | 0.491 | ||
| Male | 81 (8.8) | 146 (8.1) | |
| Female | 836 (91.2) | 1665 (91.9) | |
| Age (years), mean(s.d.) | 44.8(9.6) | 44.9(9.4) | 0.757 |
| Socioeconomic status | 0.875 | ||
| Low | 465 (50.7) | 936 (51.7) | |
| Intermediate | 361 (39.4) | 695 (38.4) | |
| Higher-grade non-manual | 91 (9.9) | 180 (9.9) | |
| Retirement status | 0.212 | ||
| Not retired | 755 (82.3) | 1525 (84.2) | |
| Disability retirement | 157 (17.1) | 282 (15.6) | |
| Statutory retirement | 5 (0.6) | 4 (0.2) | |
| Diseases | |||
| Sleep apnoea | 139 (15.2) | 257 (14.2) | 0.498 |
| Hypertension | 116 (13.0) | 212 (11.7) | 0.474 |
| Cardiovascular diseases* | 20 (2.2) | 32 (1.8) | 0.455 |
| Asthma or COPDø | 131 (14.3) | 223 (12.3) | 0.148 |
| Musculoskeletal disorders† | 108 (12.0) | 203 (11.2) | 0.659 |
| Mental or behavioural disorders | 71 (7.7) | 138 (7.6) | 0.910 |
| Other‡ | 34 (3.7) | 51 (2.8) | 0.206 |
| Place of residence | 0.988 | ||
| City | 455 (49.6) | 901 (49.8) | |
| Town | 254 (27.7) | 504 (27.8) | |
| Rural | 208 (22.7) | 406 (22.4) | |
| Hospital district | 0.987 | ||
| Helsinki and Uusimaa | 347 (37.8) | 691 (38.2) | |
| South-West Finland | 146 (15.9) | 280 (15.5) | |
| Pirkanmaa | 151 (16.5) | 307 (16.9) | |
| Northern Ostrobothnia | 105 (11.5) | 198 (10.9) | |
| Other | 168 (18.3) | 335 (18.5) | |
| Propensity score, mean(s.d.) | 0.16(0.10) | 0.16(0.09) | 0.187¶ |
Values are n (%) unless indicated otherwise. *Ischaemic heart disease, heart failure, stroke. †Rheumatoid arhritis and related disorders, osteoarthritis of hip, osteoarthritis of knee. ‡Parkinson disease, multiple sclerosis, epilepsy, alcoholic liver disease, pancreatitis, renal failure. øCOPD, chronic obstructive pulmonary disease. §P-values derived from Chi2 test for categorial variables and T-test for continous variables.