Table 3.
Sensitivity of the estimated bladder cancer treatment cost ratio to an unmeasured Bernoulli confounder
| π0 | π1 | Effect of confounder | Cost ratio | 95% CI |
|---|---|---|---|---|
| 0.7 | 0.5 | 1.1 | 0.89 | (0.81, 0.98) |
| 0.8 | 0.4 | 1.1 | 0.91 | (0.82, 1.00) |
| 0.8 | 0.3 | 1.1 | 0.92 | (0.83, 1.01) |
| 0.7 | 0.5 | 1.25 | 0.91 | (0.83, 1.00) |
| 0.8 | 0.4 | 1.25 | 0.95 | (0.87, 1.05) |
| 0.8 | 0.3 | 1.25 | 0.97 | (0.89, 1.07) |
| 0.7 | 0.5 | 1.5 | 0.94 | (0.86, 1.04) |
| 0.8 | 0.4 | 1.5 | 1.02 | (0.93, 1.12) |
| 0.8 | 0.3 | 1.5 | 1.06 | (0.97, 1.17) |
Unadjusted cost ratio = 0.87 (95% CI 0.79–0.96).
Boldface confidence intervals denote changes from the unadjusted inference.
π0 = prevalence of unmeasured confounder in cystectomy group.
π1 = prevalence of unmeasured confounder in rad/chemo group.