Table 1.
Characteristics of Dyads by Amyloid PET Scan Result
| Total (n=1,551 dyads) |
Positive (n=1,050 dyads) |
Negative (n=501 dyads) |
Pa | |
|---|---|---|---|---|
| Scan recipient characteristics (reported by scan recipient) | ||||
| Mean risk willing to accept (SD) | 27.94 (34.36) | 29.85 (34.76) | 23.96 (33.19) | 0.002 |
| Mean age (SD), y | 74.47 (5.55) | 74.77 (5.5) | 73.85 (5.6) | 0.002 |
| Mean TICS-M (SD) | 20.77 (6.03) | 19.87 (6) | 22.65 (5.67) | <0.001 |
| Female, n (%) | 601 (38.75) | 417 (39.71) | 184 (36.73) | 0.259 |
| Marital status, n (%) | 0.232 | |||
| Married/living with a partner | 1415 (91.23) | 961 (91.52) | 454 (90.62) | |
| Separated/divorced | 49 (3.16) | 34 (3.24) | 15 (2.99) | |
| Widowed | 71 (4.58) | 48 (4.57) | 23 (4.59) | |
| Never married | 16 (1.03) | 7 (0.67) | 9 (1.8) | |
| Education, n (%) | 0.193 | |||
| High school graduate or less | 243 (15.67) | 174 (16.57) | 69 (13.77) | |
| Some college | 395 (25.47) | 252 (24) | 143 (28.54) | |
| Bachelor's degree | 364 (23.47) | 251 (23.9) | 113 (22.55) | |
| Advanced degree | 549 (35.4) | 373 (35.52) | 176 (35.13) | |
| Race, n (%) | 0.021 | |||
| White | 1491 (96.13) | 1013 (96.48) | 478 (95.41) | |
| African American | 27 (1.74) | 12 (1.14) | 15 (2.99) | |
| Other | 33 (2.12) | 25 (2.38) | 8 (1.58) | |
| Care partner characteristics (reported by care partner) | ||||
| Mean risk believe scan recipient will accept (SD) | 29.68 (33.74) | 32.23 (33.98) | 24.31 (32.62) | <0.001 |
| Mean age (SD), y | 69.99 (9.48) | 70.21 (9.49) | 69.52 (9.45) | 0.179 |
| Mean care partner reported ECog-12 for scan recipient (SD) | 2.21 (0.71) | 2.26 (0.7) | 2.11 (0.71) | <0.001 |
| Female, n (%) | 1060 (68.34) | 713 (67.9) | 347 (69.26) | 0.591 |
| Marital status, n (%) | 0.012 | |||
| Married/living with a partner | 1475 (95.1) | 1007 (95.9) | 468 (93.41) | |
| Separated/divorced | 29 (1.87) | 17 (1.62) | 12 (2.4) | |
| Widowed | 16 (1.03) | 5 (0.48) | 11 (2.2) | |
| Never married | 31 (2) | 21 (2) | 10 (2) | |
| Education, n (%) | 0.529 | |||
| High school graduate or less | 222 (14.31) | 155 (14.76) | 67 (13.37) | |
| Some college | 434 (27.98) | 295 (28.1) | 139 (27.74) | |
| Bachelor's degree | 427 (27.53) | 295 (28.1) | 132 (26.35) | |
| Advanced degree | 468 (30.17) | 305 (29.05) | 163 (32.53) | |
| Race, n (%) | <0.003 | |||
| White | 1490 (96.07) | 1017 (96.86) | 473 (94.41) | |
| African American | 25 (1.61) | 9 (0.86) | 16 (3.19) | |
| Other | 36 (2.32) | 24 (2.29) | 12 (2.4) | |
| Relationship to scan recipient, n (%) | 0.227 | |||
| Spouse | 1378 (88.85) | 931 (88.67) | 447 (89.22) | |
| Child | 121 (7.8) | 88 (8.38) | 33 (6.59) | |
| Other | 52 (3.35) | 31 (2.95) | 21 (4.19) | |
| Out of all the scan recipient’s family and friends who is the one person most involved in helping make decisions about their health care if they are no longer able, n (%) | 0.471 | |||
| Care partner | 1485 (95.74) | 1008 (96) | 477 (95.21) | |
| Someone else | 66 (4.26) | 42 (4) | 24 (4.79) | |
| The scan recipient has discussed their preferences for who should make health care decision if they are no longer able to make it, n (%) | 0.269 | |||
| Yes | 1370 (88.33) | 934 (88.95) | 436 (87.03) | |
| No | 181 (11.67) | 116 (11.05) | 65 (12.97) | |
a
Comparison between positive and negative amyloid PET scan