Table 2. . Logistic LASSO-PCR results for four categorical HCP attributes.
| Model response (significant CV results italicized) | Sample size | Significant correlation with intracranial volume | Training accuracy (measure of model fit) | CV prediction accuracy (ICV only) | CV prediction accuracy (ICV and LCF PCs) | Confidence interval [lower, upper] (ICV and LCF PCs) | Accuracy p value | |
|---|---|---|---|---|---|---|---|---|
| Gender 1* | 840 | Yes | 0.9405 | 0.8071 | 0.8691 | 0.8452 | 0.8905 | 0 |
| Race 2* | 760 | Yes | 0.9632 | 0.8276 | 0.9053 | 0.8842 | 0.9263 | 0 |
| Ethnicity3 | 833 | No | 0.9136 | 0.9136 | 0.9136 | 0.8944 | 0.9316 | 1.0000 |
| Relationship status4 | 840 | No | 0.6679 | 0.5571 | 0.5571 | 0.5226 | 0.5917 | 0.7620 |
* The prediction accuracy was statistically significant after applying the false discovery rate (FDR) correction for multiple comparisons.
1The female-male split in the 840 subjects was 56%–44%, respectively.
2The white and black subpopulations made up 82% and 18%, respectively, of the 760 subjects reported here.
3The Not Hispanic/Latino and Hispanic split in the 833 subjects was 91.4%–8.6%, respectively.
4Relationship status included 44.3% of the population in a “married or live-in relationship” and 55.7% not in such a relationship.