Distribution of Sociodemographics, Covariates, and Incident Blood Pressure Control Among Adult Primary Care Patients with Treated Hypertension and Uncontrolled Blood Pressure at Baseline (2008–2010), by Patient Portal Use During the Follow-up Period (2011–2015) (N = 1571)
| Variable | Total Cohort (N = 1571) | Patient Portal Nonusers (n = 1171) | Patient Portal Users (n = 400) | P Value |
|---|---|---|---|---|
| Blood pressure control (yes) | 1425 (90.7) | 1045 (89.2) | 380 (95.0) | .001 |
| Age (years), mean (SD) | 64.1 (13.3) | 65.1 (13.5) | 60.9 (12.2) | <.0001 |
| Nonwhite race | 931 (59.3) | 819 (69.9) | 112 (28.0) | <.0001 |
| Female sex | 988 (62.9) | 726 (62.0) | 262 (65.5) | .211 |
| Married | 632 (40.2) | 401 (34.2) | 231 (57.7) | <.0001 |
| SES index (by zip code) | <.0001 | |||
| Lowest | 603 (38.4) | 530 (45.3) | 73 (18.2) | |
| Lower-middle | 347 (22.1) | 271 (23.1) | 76 (19.0) | |
| Upper-middle | 376 (23.9) | 233 (19.9) | 143 (35.8) | |
| Highest | 245 (15.6) | 137 (11.7) | 108 (27.0) | |
| Clinic type1 | <.0001 | |||
| GIM | 1224 (77.9) | 965 (82.4) | 259 (64.8) | |
| Family medicine | 347 (22.1) | 206 (17.6) | 141 (35.2) | |
| High clinic utilization | 876 (55.8) | 632 (54.0) | 244 (61.0) | .015 |
| Smoking status, 2008–2015 | <.0001 | |||
| Never | 758 (48.3) | 537 (45.9) | 221 (55.2) | |
| Former | 403 (25.6) | 295 (25.2) | 108 (27.0) | |
| Current | 410 (26.1) | 339 (28.9) | 71 (17.8) | |
| Depression | 262 (16.7) | 179 (15.3) | 83 (20.8) | .011 |
| Obesity | 1051 (66.9) | 772 (65.9) | 279 (69.7) | .161 |
| Comorbidity index, mean (SD) | 2.1 (2.4) | 2.3 (2.4) | 1.6 (2.3) | <.0001 |
Data are n (%) unless otherwise indicated.
GIM, general internal medicine; SD, standard deviation; SES, socioeconomic status.