Table 3.
Univariate analysis of number of cancellations
| Variable (n) | Mean no. of cancellations (95% CI) | p value* |
|---|---|---|
| Sex | 0.61 | |
| Male (2076) | 0.13 (0.11–0.14) | |
| Female (538) | 0.13 (0.09–0.16) | |
| Patient status | 0.11 | |
| Inpatient (1701) | 0.11 (0.09–0.13) | |
| Outpatient (670) | 0.19 (0.15–0.22) | |
| Cancer status | 0.45 | |
| No cancer (1654) | 0.15 (0.13–0.17) | |
| Cancer† (960) | 0.09 (0.07–0.11) | |
| Year | ||
| 2003 (366) | 0.01 (0.00–0.01) | < 0.001 |
| 2004 (496) | 0.02 (0.01–0.04) | |
| 2005 (718) | 0.08 (0.06–0.10) | |
| 2006 (720) | 0.18 (0.15–0.22) | |
| 2007 (314) | 0.40 (0.31–0.50) | |
| Urgency code‡ | ||
| 1 (143) | 0.06 (0.02–0.09) | 0.020 |
| 2 (1014) | 0.12 (0.10–0.15) | |
| 3 (987) | 0.12 (0.09–0.14) | |
| 4 (335) | 0.16 (0.10–0.22) | |
| 5 (135) | 0.21 (0.12–0.31) | |
| Surgical category | < 0.001 | |
| Diagnostic procedures (381) | 0.23 (0.17–0.30) | |
| Benign, minor (1198) | 0.12 (0.09–0.14) | |
| Benign, major (184) | 0.15 (0.08–0.21) | |
| Cancer, minor (470) | 0.11 (0.08–0.15) | |
| Cancer, major (381) | 0.06 (0.03–0.08) | |
CI = confidence interval.
*
P values are based on nonparametric tests (Mann–Whitney and Kruskal–Wallis).
†
Those with a cancer flag (960) do not equal those identified as “Cancer, minor” and “Cancer, major” (851) since the flag is based on the presurgical impression.
‡
1 = most urgent.