Table 3.
Unadjusted and adjusted postoperative outcomes of bariatric surgery patients at follow-up
| Variables | Gastric banding n (%) |
Gastric bypass n (%) |
Unadjusted P-valuea CR (95 %CI)b | Adjusted P-valuea,c CR (95 %CI)b,c |
|---|---|---|---|---|
| Overall [n (%) within each F/u period] | ||||
| 1-Year F/ud | 296 (28) | 769 (72) | – | – |
| 3-Year F/ue | 135 (27) | 362 (73) | ||
| 5-Year F/uf | 56 (19) | 232 (81) | ||
| PTBWL [mean ± SD; median (IQR)] | ||||
| 1-Year F/u | 16 ± 8.3; 16 (11) | 35 ± 8.1; 35 (10) | < 0.0001g | < 0.0001g |
| 3-Year F/u | 19 ± 12; 18 (18) | 35 ± 11; 35 (16) | 0.0096h | 0.0065h |
| 5-Year F/u | 17 ± 12; 15 (14) | 34 ± 11; 33 (15) | ||
| GERD | ||||
| 1-Year F/u | 64 (23) | 97 (13) | ||
| 3-Year F/u | 33 (25) | 42 (12) | 1.9 (1.3–2.8)i | 2.1 (1.4–3.0)i |
| 5-Year F/u | 19 (35) | 28 (13) | ||
| DJD | ||||
| 1-Year F/u | 128 (46) | 289 (40) | ||
| 3-Year F/u | 59 (46) | 127 (37) | 3.6 (2.2–6.0)i | 3.4 (2.0–5.6)i |
| 5-Year F/u | 27 (49) | 79 (35) | ||
| DM | ||||
| 1-Year F/u | 88 (31) | 129 (17) | ||
| 3-Year F/u | 37 (28) | 53 (15) | 3.4 (2.1–5.2)i | 3.4 (2.2–5.4)i |
| 5-Year F/u | 25 (45) | 28 (13) | ||
| Apnea | ||||
| 1-Year F/u | 73 (26) | 144 (20) | ||
| 3-Year F/u | 36 (27) | 41 (12) | 3.1 (1.8–5.2)i | 3.1 (1.9–5.3)i |
| 5-Year F/u | 16 (29) | 24 (11) | ||
| HTN | ||||
| 1-Year F/u | 173 (63) | 281 (39) | ||
| 3-Year F/u | 79 (61) | 124 (36) | 5.4 (3.4–8.5)i | 5.5 (3.4–8.8)i |
| 5-Year F/u | 43 (78) | 94 (42) | ||
| Dyslipidemia | ||||
| 1-Year F/u | 99 (36) | 100 (14) | ||
| 3-Year F/u | 47 (36) | 41 (12) | 6.0 (3.4–11)i | 6.3 (3.5–11)i |
| 5-Year F/u | 25 (45) | 29 (13) | ||
| Heart | ||||
| 1-Year F/u | 14 (5) | 43 (6) | ||
| 3-Year F/u | 8 (6) | 23 (7) | 1.8 (0.2–15)i | 3.0 (0.31–30)i |
| 5-Year F/u | 6 (11) | 18 (8) | ||
Mixed effects repeated measures model
Proportional hazards partial likelihood
Adjusted for surgery type, age, gender, and preoperative presence of DJD, diabetes, HTN, dyslipidemia, heart disease, apnea, and asthma (excluding stratifying variables of interest for Cox regression models)
Total available patients for time period = 2,261 (AGB = 349 vs. RYGB = 1,912)
Total available patients for time period = 1,964 (AGB = 267 vs. RYGB = 1,697)
Total available patients for time period = 1,578 (AGB = 121 vs. RYGB = 1,457)
Group main effect
Group × time interaction
Referent category is banding
AGB adjustable gastric banding, CI confidence interval, CR cure ratio (instantaneous cure rate of preoperative comorbidity relative to referent category; computed using Cox proportional hazard model), DJD degenerative joint disease, DM diabetes mellitus, F/U follow-up, GERD gastroesophageal reflux disease, HTN hypertension, IQR interquartile range, SD standard deviation, PTBWL percent total body weight loss, RYGB Roux-en-Y gastric bypass