Table 3.
Results of Multivariable Extended Cox Proportional Hazards Models Comparing Time to Stone Diagnosis and Time to Stone Procedure After Bariatric Surgery
| Variable | Time to stone diagnosis |
|
Time to stone procedure |
||
|---|---|---|---|---|---|
| Adjusted hazard ratio (95% CI) | p | Variable | Adjusted hazard ratio (95% CI) | p | |
| Age <30 (referent) | 1.00 | Age <30 (referent) | 1.00 | ||
| 30–40 | 1.15 (1.03–1.28) | 0.009 | 30–40 | 1.57 (1.19–2.06) | 0.001 |
| 40–50 | 1.23 (1.1–1.37) | <0.001 | 40–50 | 2.03 (1.55–2.65) | <0.001 |
| 50–60 | 1.21 (1.08–1.34) | <0.001 | 50–60 | 2.13 (1.62–2.78) | <0.001 |
| >60 | 1.21 (1.05–1.39) | 0.008 | >60 | 2.37 (1.73–3.26) | <0.001 |
| Males | 1.63 (1.55–1.72) | <0.001 | Males | 1.53 (1.37–1.70) | <0.001 |
| GB (referent) | 1.00 | GB (referent) | 1.00 | ||
| SG (1–36 months) | 1.35 (1.25–1.46) | <0.001 | SG (1–18 months) | 1.71 (1.36–2.14) | <0.001 |
| SLRY (1–36 months) | 2.15 (2.02–2.29) | <0.001 | SLRY (1–18 months) | 3.23 (2.66–3.91) | <0.001 |
| LLRY (1–36 months) | 2.12 (1.74–2.58) | <0.001 | LLRY (1–18 months) | 3.23 (1.99–5.24) | <0.001 |
| BPDDS (1–36 months) | 4.54 (3.66–5.62) | <0.001 | BPDDS (1–18 months) | 5.61 (3.11–10.13) | <0.001 |
| SG (36–60 months) | 0.77 (0.57–1.03) | 0.080 | SG (18–36 months) | 0.98 (0.75–1.29) | 0.909 |
| SLRY (36–60 months) | 1.29 (1.12–1.50) | <0.001 | SLRY (18–36 months) | 2.11 (1.78–2.5) | <0.001 |
| LLRY (36–60 months) | 1.56 (0.99–2.46) | 0.053 | LLRY (18–36 months) | 2.35 (1.49–3.7) | <0.001 |
| BPDDS (36–60 months) | 4.65 (2.85–7.57) | <0.001 | BPDDS (18–36 months) | 7.50 (4.73–11.89) | <0.001 |
| Comorbidities | Comorbidities | ||||
| Coronary artery disease | 1.17 (1.03–1.32) | 0.014 | Coronary artery disease | 1.16 (0.92–1.48) | 0.215 |
| Diabetes mellitus | 1.07 (1.01–1.13) | 0.014 | Diabetes mellitus | 1.12 (1–1.25) | 0.045 |
| Depression | 1.22 (1.12–1.33) | <0.001 | Depression | 1.25 (1.05–1.49) | 0.013 |
| Hypertension | 1.04 (0.99–1.10) | 0.098 | Hypertension | 0.92 (0.83–1.02) | 0.124 |
| Region of the United States | Region of the United States | ||||
| North East (referent) | 1.00 | North East (referent) | 1.00 | ||
| North Central | 1.13 (1.04–1.23) | 0.002 | North Central | 1.61 (1.36–1.90) | <0.001 |
| South | 1.14 (1.06–1.22) | <0.001 | South | 1.35 (1.15–1.58) | <0.001 |
| West | 0.98 (0.90–1.07) | 0.718 | West | 0.93 (0.77–1.13) | 0.483 |
| Unknown | 0.99 (0.78–1.24) | 0.906 | Unknown | 1.13 (0.69–1.83) | 0.629 |
CI = confidence interval.