Logistic regression analysis of factors associated with 30-day mortality following pneumatic dilatation therapy
| Pneumatic dilatation | ||
| OR | P value | |
| Age group | ||
| 18–38 | 1 (baseline) | |
| 39–52 | 0.95 (0.33 to 2.73) | 0.919 |
| 53–65 | 1.85 (0.75 to 4.53) | 0.181 |
| 66–77 | 4.55 (2.00 to 10.38) | <0.001 |
| >77 | 9.78 (4.33 to 22.06) | <0.001 |
| Deprivation | ||
| 1 | 1.36 (0.85 to 2.18) | 0.196 |
| 2 | 1.35 (0.87 to 2.12) | 0.184 |
| 3 | 1.19 (0.76 to 1.86) | 0.451 |
| 4 | 0.69 (0.42 to 1.13) | 0.144 |
| 5 | 1 (baseline) | |
| Ethnicity | ||
| White | 1 (baseline) | |
| Not white | 0.82 (0.42 to 1.60) | 0.555 |
| Unknown | 0.44 (0.22 to 0.88) | 0.020 |
| Gender | ||
| Female | 1 (baseline) | |
| Male | 1.01 (0.75 to 1.35) | 0.953 |
| Previous myotomy | ||
| Yes | 2.00 (1.05 to 3.79) | 0.035 |
| No | 1 (baseline) | |
| Charlson comorbidity score | ||
| 0 | 1 (baseline) | |
| 1–4 | 0.77 (0.41 to 1.41) | 0.393 |
| >4 | 2.87 (2.08 to 3.95) | <0.001 |
| No of prior dilatations | ||
| 0 | 1 (baseline) | |
| 1–3 | 1.58 (1.15 to 2.16) | 0.005 |
| 4+ | 1.97 (1.21 to 3.19) | 0.006 |