| Characteristic | Values | ORa | AIC+ Score |
| year of first LPN licensure | 1938-1981 | - | 0.76708 |
| 1982-1995 | 5.44 | ||
| 1996-2004 | 18.1 | ||
| 2005-2013 or missing | 8.55 | ||
| age at first LPN licensure (years) | 16 - 22 | 1.21 | 0.75111 |
| 23-27 or missing | 1.75 | ||
| 28 - 34 | 1.39 | ||
| 35 - 68 | - | ||
| highest nursing degree in last year as an LPN | diploma or associate degree | - | 0.75106 |
| baccalaureate, master or doctorate in nursing or missing | 1.54 | ||
| work setting in last year as an LPN | hospital in-patient | 3.98 | 0.75651 |
| long-term care | 1.49 | ||
| solo/group practice or hospital out-patient or other | - | ||
| missing | 2.47 | ||
| specialty in last year as an LPN | community-based practice | - | 0.75413 |
| geriatrics, pediatrics, or other | 1.44 | ||
| medical/surgical | 4.61 | ||
| missing | 2.36 | ||
| employed full time in last year as an LPN | yes | - | 0.75120 |
| no | 1.31 | ||
| missing | 1.67 | ||
| located in rural area in last year as an LPN | no | - | 0.75035 |
| yes | 1.29 |