Table 1.
Baseline characteristics of participants.
| Characteristics | All (N=97,607), n (%) | Portal users | Portal nonusers | |||
|
|
|
|
Portal message (n=19,506), n (%) | Usual care (n=19,505), n (%) | Call (n=15,000), n (%) | Usual care (n=43,596), n (%) |
| Sex |
|
|
|
|
|
|
|
|
Female | 53,250 (54.5) | 12,230 (62.7) | 12,249 (62.8) | 7325 (48.8) | 21,446 (49.2) |
|
|
Male | 44,349 (45.4) | 7275 (37.3) | 7256 (37.2) | 7672 (51.1) | 22,146 (50.8) |
|
|
Missing | 8 (0.01) | 1 (0.0) | 0 (0.0) | 3 (0.0) | 4 (0.0) |
| Age |
|
|
|
|
|
|
|
|
18-34 | 30,556 (31.3) | 4508 (23.1) | 4597 (23.6) | 5615 (37.4) | 15,836 (36.3) |
|
|
35 - 49 | 25,579 (26.2) | 5096 (26.1) | 5062 (26.0) | 3896 (26.0) | 11,525 (26.4) |
|
|
50 - 64 | 26,495 (27.1) | 6275 (32.2) | 6224 (31.9) | 3547 (23.6) | 10,449 (24.0) |
|
|
65-74 | 8593 (8.8) | 2419 (12.4) | 2388 (12.2) | 965 (6.4) | 2821 (6.5) |
|
|
75+ | 6384 (6.5) | 1208 (6.2) | 1234 (6.3) | 977 (6.5) | 2965 (6.8) |
| Race |
|
|
|
|
|
|
|
|
White | 66,020 (67.6) | 14,180 (72.7) | 14,223 (72.9) | 9608 (64.1) | 28,009 (64.2) |
|
|
Black | 3417 (3.5) | 456 (2.3) | 440 (2.3) | 630 (4.2) | 1891 (4.3) |
|
|
Asian | 3502 (3.6) | 737 (3.8) | 715 (3.7) | 528 (3.5) | 1522 (3.5) |
|
|
American Indian or Alaska Native | 1021 (1.1) | 140 (0.7) | 144 (0.7) | 194 (1.3) | 543 (1.2) |
|
|
Other | 10,366 (10.6) | 1672 (8.6) | 1745 (8.9) | 1769 (11.8) | 5180 (11.9) |
|
|
Missing | 13,281 (13.6) | 2321 (11.9) | 2238 (11.5) | 2271 (15.1) | 6451 (14.8) |
| Health care utilization level |
|
|
|
|
|
|
|
|
Had office visita | 80,748 (82.7) | 17,896 (91.7) | 17,908 (91.8) | 11,609 (77.4) | 33,335 (76.5) |
|
|
Did not have office visit | 16,859 (17.3) | 1610 (8.3) | 1597 (8.2) | 3391 (22.6) | 10,261 (23.5) |
a12 months prior to randomization.