Table 6.
Multivariable analysis showing changes in mean screening knowledge scores and 95% CIs among cancer patients surveyed at RCRH CCI, Rapid City, South Dakota, 2005–2007
| Predictor | Adjustment in mean score (95% CI)a | P-value |
|---|---|---|
| Race/ethnicity | ||
| Native American | −0.62 (−1.0, −0.25) | 0.001 |
| White | Ref. | |
| Gender | ||
| Female | −0.18 (−0.47, 0.11) | 0.23 |
| Male | Ref. | |
| Age (linear) | 0.01 (−0.01, 0.02) | 0.45 |
| Education (ordinal) | 0.05 (−0.11, 0.20) | 0.54 |
| Employment status | ||
| Not employed/retired | −0.10 (−0.47, 0.27) | 0.60 |
| Employed | Ref. | |
| Annual incomeb | ||
| <$30,000 | Ref. | 0.32 |
| ≥$30,000 | 0.16 (−0.16, 0.49) | |
| Distance from home to CCI | ||
| ≤50 miles | Ref. | 0.69 |
| >50 miles | 0.07 (−0.27, 0.40) | |
The influence of each variable on mean scores is adjusted for confounding by other variables using multiple linear regression. An increase in screening knowledge mean scale score represents an increase in knowledge of cancer screening tests and rationale as measured by this scale.
Twenty patients did not supply income information. Multivariable analyses were also performed excluding income from the model to see if the absence of these participants in the model influenced the model results. The models not including income showed similar results to the analysis above and are thus not presented here.
CI = confidence interval
RCRH CCI = Rapid City Regional Hospital Cancer Care Institute
Ref. = reference group