Table 4.
The ten most important features selected from entire EHR variables using Lasso-LR
| Ranking | Features | EHR component | Values | the “most harmful” cases (N=395) | the “least harmful” cases (N=399) | p-value |
|---|---|---|---|---|---|---|
| 1 | History of tobacco use | symptoms | present | 189 (47.85%) | 29 (7.27%) | p<0.001 |
| Not present | 206 (52.15%) | 370 (92.73%) | ||||
| 2 | Tobacco use disorder | symptoms | present | 189 (47.85%) | 29 (7.27%) | p<0.001 |
| Not present | 206 (52.15%) | 370 (92.73%) | ||||
| 3 | Mammography, screening, bilateral (two view film study of each breast) | procedures | present | 116 (29.37%) | 229 (57.39%) | p<0.001 |
| Not present | 279 (70.63%) | 170 (42.61%) | ||||
| 4 | Other nonoperative measurements and examinations | diagnoses | present | 191 (48.35%) | 63 (15.79%) | p<0.001 |
| Not present | 204 (51.65%) | 336 (84.21%) | ||||
| 5 | Prescription(s) generated and transmitted via a qualified eRx system | procedure | present | 93 (23.54%) | 0 (0%) | p<0.001 |
| Not present | 302 (76.46%) | 399 (100%) | ||||
| 6 | Normal non-HDL cholesterol | laboratory results | present | 90 (22.78%) | 1 (0.25%) | p<0.001 |
| Not present | 305 (77.22%) | 398 (99.75%) | ||||
| 7 | Hydrocodone acetaminophen | medications | present | 105 (26.58%) | 21 (5.26%) | p<0.001 |
| Not present | 290 (73.42%) | 378 (94.74%) | ||||
| 8 | Cause of death | symptoms | present | 190 (48.10%) | 278 (69.67%) | p<0.001 |
| Not present | 205 (51.90%) | 121 (30.33%) | ||||
| 9 | Computer-Aided Detection (CAD) mammography | procedures | present | 72 (18.23%) | 3 (0.75%) | p<0.001 |
| Not present | 323 (81.77%) | 396 (99.25%) | ||||
| 10 | Gynecological examination | diagnoses | present | 95 (24.05%) | 173 (43.36%) | p<0.001 |
| Not present | 300 (75.95%) | 226 (56.64%) |