Table 1. Comparison of Lithium-Associated Renal Failure Cases with Controls, Training Data Set.
| Feature |
Cases (N=991) |
Controls (N=2859) |
Comparison | ||
|---|---|---|---|---|---|
| n | Pct (%) | n | pct (%) | X2 (1df)* | |
| Sex, male | 364 | 37 | 1314 | 46 | 25.50 |
| Race, white | 867 | 87 | 2318 | 81 | 21.16 |
| Insurance, private | 403 | 41 | 1157 | 40 | 0.01 |
| Hypertension, lifetime | 605 | 61 | 710 | 25 | 429.18 |
| Diabetes mellitus, lifetime | 306 | 31 | 354 | 12 | 177.24 |
| Smoking, lifetime | 349 | 35 | 665 | 23 | 54.23 |
| Schizophrenia or schizoaffective, any visit | 206 | 21 | 378 | 13 | 32.74 |
| Feature | Mean | SD | Mean | SD | Student's t-test |
|---|---|---|---|---|---|
| Age (years) | 54.25 | 14.27 | 39.80 | 15.90 | 25.31 |
| Adjusted Charlson Index | 4.15 | 3.93 | 1.55 | 2.56 | 23.72 |
*p<0.001 for all contrasts except insurance (p=0.91).