Table 2.
Cohort characteristics.
| Characteristics | Site and group classification | |||||||||||
|
|
Mass General Hospital | Beth Israel Deaconess Medical Center | ||||||||||
|
|
ICDa+ /MEDb+ | ICD+ /MED– | ICD– /MED+ | ICD– /MED– | Total | ICD+ /MED+ | ICD+ /MED– | ICD+ /MED+ | ICD+ /MED– | Total | ||
| Patients, n | 347 | 348 | 348 | 350 | 1398 | 41 | 0 | 220 | 167 | 428 | ||
| Notes, n | 350 | 350 | 350 | 350 | 1400 | 350 | —c | 700 | 350 | 1400 | ||
| Positive cases based on manual annotation, n (%)d | 151 (43.1) | 184 (52.6) | 44 (12.6) | 46 (13.1) | — | 135 (38.6) | — | 192 (27.4) | 118 (33.7) | — | ||
| Age (years), mean (SD) | 73.8 (12.3) | 74.5 (13.1) | 65.4 (15.2) | 57.3 (23.4) | 67.7 (18.0) | 71.2 (11.9) | — | 63.8 (13.1) | 65.0 (14.1) | 65.0 (13.8) | ||
| Sex, n (%)e | ||||||||||||
|
|
Female | 175 (50.4) | 178 (51.1) | 196 (56.3) | 214 (61.1) | 763 (54.8) | 20 (48.8) | — | 110 (50) | 85 (50.9) | 215 (50.2) | |
|
|
Male | 172 (49.6) | 170 (48.9) | 152 (43.7) | 136 (38.9) | 630 (45.2) | 21 (51.2) | — | 110 (50) | 82 (49.1) | 213 (49.8) | |
| Race and ethnicity, n (%)d | ||||||||||||
|
|
Black or African American | 22 (6.3) | 15 (4.3) | 17 (4.9) | 15 (4.3) | 69 (4.9) | 0 (0) | — | 0 (0) | 0 (0) | 0 (0) | |
|
|
Hispanic | 14 (4.0) | 22 (6.3) | 25 (7.2) | 19 (5.4) | 80 (5.7) | 2 (4.9) | — | 20 (9.1) | 13 (7.8) | 35 (8.2) | |
|
|
Asian | 7 (2) | 4 (1.1) | 4 (1.1) | 7 (2) | 22 (1.6) | 0 (0) | — | 8 (3.6) | 5 (3) | 13 (3) | |
|
|
White | 295 (85) | 305 (87.6) | 289 (83) | 296 (84.6) | 1185 (85.1) | 29 (70.7) | — | 141 (64.1) | 116 (69.5) | 286 (66.8) | |
aICD: International Classification of Diseases.
bMED: medications.
cNot applicable.
dPercentages are based on the number of notes as the denominators.
ePercentages are based on the number of patients as the denominators.