Table 2.
Encounter characteristics
| All Encounters (N = 663 407) | Encounters where system fired (N = 80 195) |
Encounters where system was used (N = 21 685) |
P-valuef | |||
|---|---|---|---|---|---|---|
| N (%) | N (%) | System fire rated | N (%) | System use ratee | ||
| General characteristics | ||||||
| Intermediate/high 10-year ASCVD risk (>7.5%)a | N/A | 55 621 (69.4) | 100 | 16 057 (74.1) | 28.9 | <.001 |
| Established patient visit | 462 695 (69.8) | 70 691 (88.2) | 15.3 | 19 787 (91.3) | 28.0 | <.001 |
| Primary care visit | 519 378 (78.3) | 69 446 (86.6) | 13.4 | 20 250 (93.4) | 29.2 | <.001 |
| Provider > 10 min behind scheduleb | 192 018 (28.9) | 18 942 (23.6) | 9.9 | 4925 (22.7) | 26.0 | <.001 |
| Appointment length ≥20 min | 522 638 (78.8) | 62 838 (78.4) | 12.0 | 18 095 (83.4) | 28.8 | <.001 |
| System not previously used on patient | N/A | 45 173 (56.3) | – | 9559 (44.1) | 21.2 | <.001 |
| Patient demographics | ||||||
| Female | 408 151 (61.5) | 44 325 (55.3) | 10.9 | 11 716 (54.0) | 26.4 | <.001 |
| Age at baseline | <.001 | |||||
| <40 | 303 407 (45.7) | 0 | N/A | 0 (N/A) | N/A | |
| 40–49 | 104 762 (15.8) | 16 895 (21.1) | 16.1 | 4125 (19.0) | 24.4 | |
| 50–59 | 112 431 (17.0) | 28 623 (35.7) | 25.5 | 7635 (35.2) | 26.7 | |
| ≥60 | 142 807 (21.5) | 34 677 (43.2) | 24.3 | 9925 (45.8) | 28.6 | |
| Race/ethnicity | <.001 | |||||
| NH-white | 245 223 (37.0) | 28 416 (35.4) | 11.6 | 8090 (37.3) | 28.5 | |
| NH-Black | 84 247 (12.7) | 15 453 (19.3) | 18.3 | 5929 (27.3) | 38.4 | |
| NH-other | 45 147 (6.8) | 4993 (6.2) | 11.1 | 1239 (5.7) | 24.8 | |
| Hispanic | 173 334 (26.1) | 20 327 (25.4) | 11.7 | 3498 (16.1) | 17.2 | |
| Unknown | 115 456 (17.4) | 11 006 (13.7) | 9.5 | 2929 (13.5) | 26.6 | |
| Baseline insurance status | <.001 | |||||
| Medicaid | 351 287 (53.0) | 30 160 (37.6) | 8.6 | 7233 (33.4) | 24.0 | |
| Medicare | 107 903 (16.3) | 24 483 (30.5) | 22.7 | 7773 (35.9) | 31.8 | |
| Other | 22 601 (3.4) | 4113 (5.1) | 18.2 | 653 (3.0) | 15.9 | |
| Private | 69 784 (10.5) | 7863 (9.8) | 11.3 | 2572 (11.9) | 32.7 | |
| Uninsured | 111 832 (16.9) | 13 576 (16.9) | 12.1 | 3454 (15.9) | 25.4 | |
| Baseline FPL category | <.001 | |||||
| ≤138% FPL | 393 023 (59.2) | 49 377 (61.57) | 12.6 | 14 598 (67.3) | 29.6 | |
| >138% FPL | 144 703 (21.8) | 16 779 (20.9) | 11.6 | 4442 (20.5) | 26.5 | |
| Unknown | 125 681 (18.9) | 14 039 (17.5) | 11.2 | 2645 (12.2) | 18.8 | |
| Clinic and provider characteristics | ||||||
| Rural setting | 110 798 (16.7) | 17 441 (21.8) | 15.7 | 6491 (29.9) | 37.2 | <.001 |
| Provider typec | <.001 | |||||
| Physician | 305 958 (46.1) | 37 292 (46.5) | 12.2 | 10 619 (49) | 28.5 | |
| Advanced practitioner | 245 915 (37.1) | 29 144 (36.3) | 11.9 | 9197 (42.4) | 31.6 | |
| Nurse/MA/other | 111 534 (16.8) | 13 759 (17.2) | 12.3 | 1869 (8.6) | 13.6 | |
a
Categories from ASCVD risk calculator (American College of Cardiology).
b
Calculated as the difference in time patient was roomed and the scheduled visit start time.
c
Physician category includes MD, DO, ND. Advanced practitioners include PAs, Nurse Practitioners, Midwives. MA: Medical Assistant. Other includes Acupuncturists, BH providers, case managers, Chiropractors, community health workers, lab technicians, and more.
d
System fire rate is the percent of encounters where system fired out of the total encounters.
e
System use rate is the percent of encounters where system was used out of the fired encounters.
f
P-value of system ever used vs not used. Chi-squared tests and t-tests used as appropriate.