Distribution of median wait times between referral and performance of colonoscopy for several patient characteristics; results of univariate analyses
| N (%) | Median time | Quantile regression | ||||
| Coefficient | SE | T Value | p Value | |||
| Age | ||||||
| <65 | 143 (39.0) | 50.0 | Referent | |||
| 65–74 | 108 (29.4) | 63.0 | 13.0000 | 16.3631 | 0.79 | 0.43 |
| >75 | 116 (31.6) | 57.0 | 7.0000 | 16.0384 | 0.44 | 0.66 |
| Race | ||||||
| White Caucasian | 187 (57.0) | 57.0 | Referent | |||
| Black | 112 (34.2) | 45.0 | −19.3445 | 14.5651 | −1.33 | 0.18 |
| Hispanic, other | 29 (8.8) | 61.0 | −3.7262 | 24.8619 | −0.15 | 0.88 |
| Gender | ||||||
| Male | 364 (99.2) | 56.5 | −9.2321 | 76.6343 | −0.12 | 0.90 |
| Female | 3 (0.8) | 66.0 | Referent | |||
| Medical disorders | ||||||
| Congestive heart failure | 29 (7.9) | 114.0 | 58.0000 | 24.5427 | 2.36 | 0.02 |
| Coronary artery disease | 83 (22.6) | 88.0 | 36.0000 | 15.7661 | 2.28 | 0.02 |
| Hypertension | 244 (66.5) | 64.5 | 23.0620 | 14.6306 | 1.58 | 0.12 |
| Diabetes | 99 (27.0) | 88.0 | 36.0000 | 14.2310 | 2.53 | 0.01 |
| Chronic obstructive pulmonary disease | 47 (12.8) | 70.0 | 18.0000 | 21.2238 | 0.85 | 0.40 |
| Any medical condition | 281 (76.6) | 193.0 | 28.0000 | 16.2706 | 1.72 | 0.09 |
| Psychiatric disorders | ||||||
| Depression | 47 (12.8) | 108.0 | 55.1083 | 20.0249 | 2.75 | 0.006 |
| Anxiety | 17 (4.6) | 118.0 | 62.0000 | 33.2869 | 1.86 | 0.06 |
| Dementia | 10 (2.7) | 21.5 | −24.8090 | 42.4349 | −0.58 | 0.56 |
| Post-traumatic stress disorder | 18 (4.9) | 115.0 | 67.0759 | 31.9511 | 2.10 | 0.04 |
| Schizophrenia | 3 (0.8) | 179.0 | 122.2794 | 75.5686 | 1.62 | 0.11 |
| Bipolar disorder | 5 (1.4) | 53.0 | −4.0000 | 59.5244 | −0.07 | 0.95 |
| Alcohol | 66 (18.0) | 53.5 | −2.5543 | 17.9672 | −0.14 | 0.89 |
| Any mental disorder | 120 (32.9) | 226.0 | 15.5027 | 14.8695 | 1.04 | 0.30 |
Data shown are for 367 patients diagnosed as having colorectal cancer in one tertiary centre from June 2001 to June 2007.