Table 4:
Multivariate linear regression models of wait time (in days) for procedures during the pandemic
| Unselected model | Selected model | |||||
|---|---|---|---|---|---|---|
| Predictors | Days delayed | 95% CI | p-value | Days delayed | 95% CI | p-value |
|
| ||||||
| Intercept | 16.3 | 10.78 – 21.82 | <0.001 | 16.0 | 10.54 – 21.41 | <0.001 |
|
| ||||||
| Age category (years) | ||||||
| 18–35 | Reference | Reference | ||||
| 36–50 | 2.7 | 0.58 – 4.81 | 0.013 | 2.7 | 0.58 – 4.80 | 0.012 |
| 51–65 | 2.1 | −0.04 – 4.16 | 0.055 | 2.1 | 0.04 – 4.20 | 0.046 |
| >65 | 0.9 | −1.97 – 3.74 | 0.5 | 0.8 | −2.04 – 3.59 | 0.6 |
|
| ||||||
| Gender | ||||||
| Male | Reference | |||||
| Female | 1.1 | −0.38 – 2.48 | 0.2 | |||
| Other | 1.0 | −17.90 – 19.87 | 0.9 | |||
|
| ||||||
| Primary language | ||||||
| English | Reference | |||||
| Spanish | −3.0 | −7.10 – 1.18 | 0.16 | |||
| Cantonese | −2.0 | −8.36 – 4.36 | 0.5 | |||
| Other | 0.3 | −4.06 – 4.67 | 0.9 | |||
|
| ||||||
| Race/ethnicity | ||||||
| White or Caucasian | Reference | |||||
| American Indian or Alaska Native | 1.1 | −7.68 – 9.79 | 0.8 | |||
| Asian | −2.3 | −4.47 – −0.17 | 0.034 | |||
| Black or African American | 1.8 | −1.14 – 4.66 | 0.2 | |||
| Latinx | −0.1 | −2.40 – 2.15 | 0.9 | |||
| Multi-Race/Ethnicity | −1.4 | −6.02 – 3.17 | 0.5 | |||
| Native Hawaiian or other Pacific Islander | −5.3 | −14.12 – 3.55 | 0.2 | |||
| Other | 1.3 | −2.40 – 5.08 | 0.5 | |||
| Unknown/declined | 4.9 | 0.40 – 9.43 | 0.033 | |||
|
| ||||||
| Marital status | ||||||
| Partnered | Reference | Reference | ||||
| Unpartnered | 0.4 | −1.08 – 1.79 | 0.6 | 0.7 | −0.74 – 2.10 | 0.3 |
| Unknown/declined | 5.3 | 1.34 – 9.26 | 0.009 | 6.9 | 3.11 – 10.59 | <0.001 |
|
| ||||||
| Insurance type | ||||||
| Commercial | Reference | Reference | ||||
| Medi-Cal | 2.3 | 0.31 – 4.27 | 0.024 | 2.0 | 0.06 – 3.90 | 0.043 |
| Medicare | 1.3 | −1.00 – 3.56 | 0.3 | 1.3 | −1.01 – 3.54 | 0.3 |
| Other | −0.8 | −4.46 – 2.97 | 0.7 | −1.0 | −4.73 – 2.69 | 0.6 |
| Uninsured/Self-Pay | −5.4 | −9.67 – −1.22 | 0.012 | −5.5 | −9.73 – −1.30 | 0.01 |
|
| ||||||
| ZIP code median income | ||||||
| Top Quartile | Reference | Reference | ||||
| 3rd Quartile | 2.7 | 0.82 – 4.57 | 0.005 | 2.6 | 0.76 – 4.49 | 0.006 |
| 2nd Quartile | 4.5 | 2.62 – 6.36 | <0.001 | 4.5 | 2.65 – 6.36 | <0.001 |
| Bottom Quartile | 4.9 | 2.71 – 6.98 | <0.001 | 5.0 | 2.91 – 7.11 | <0.001 |
|
| ||||||
| ZIP code >100 mi away | 2.4 | 0.39 – 4.50 | 0.019 | 2.6 | 0.56 – 4.61 | 0.012 |
|
| ||||||
| Priority level | ||||||
| High | Reference | Reference | ||||
| Normal | 16.5 | 14.87 – 18.21 | <0.001 | 16.6 | 14.95 – 18.28 | <0.001 |
| Low | 21.3 | 18.83 – 23.85 | <0.001 | 21.5 | 18.96 – 23.96 | <0.001 |
|
| ||||||
| Multi-panel procedure request | 0.9 | −1.65 – 3.43 | 0.5 | |||
|
| ||||||
| Cancer-associated procedure request | −1.6 | −3.59 – 0.36 | 0.11 | −1.6 | −3.61 – 0.33 | 0.10 |
Outcome was wait time (in days) between date of procedure request and date of scheduled or completed surgery/procedure. Model selection used backward stepwise methodology. Surgical/procedural specialty was included as a covariate and preserved in model selection, but coefficients are not displayed. Observations: 8,467. CI: confidence interval.