Table 1.
Baseline Characteristics of the Study Population, According to Treatment Group
| Telemonitoring | Usual Care | Total | ||
|---|---|---|---|---|
| (n =756) | (n=765) | (N=1521) | P value | |
| Age–mean±s.d. | 61.2±15.2 | 60.8±14.7 | 61.0±14.9 | 0.62 |
| Female–no. (%) | 331 (43.8) | 315 (41.2) | 646 (42.5) | 0.30 |
| Race–no. (%) | 0.53 | |||
| White | 386 (51.1) | 380 (49.7) | 766 (50.4) | |
| Black | 282 (37.3) | 305 (39.9) | 587 (38.6) | |
| Other | 88 (11.6) | 80 (10.5) | 168 (11.0) | |
| Hispanic or Latino ethnic group–no. (%)* | 20 (2.7) | 20 (2.6) | 40 (2.7) | 0.95 |
| Insurance Status–no. (%)† | 0.09 | |||
| None/Self-pay | 100 (13.5) | 79 (10.7) | 179 (12.1) | |
| Commercial Insurance | 232 (31.4) | 214 (29.0) | 446 (30.2) | |
| Public Insurance | 407 (55.1) | 445 (60.3) | 852 (57.7) | |
| Body Mass Index–mean±s.d.‡ | 26.9 ± 11.5 | 26.4 ± 11.3 | 26.6 ± 11.4 | 0.37 |
| Seated SBP (mmHg)–mean±s.d. | 121.5 ± 22.9 | 120.1 ± 21.6 | 120.8 ± 22.2 | 0.22 |
| Serum Potassium (mmol/L)–mean±s.d.§ | 4.1 ± 0.6 | 4.1 ± 0.6 | 4.1 ± 0.6 | 0.77 |
| GFR (ml/minute)ǁ | 58.3 ± 27.3 | 58.7 ± 26.0 | 58.5 ± 26.7 | 0.79 |
| LVEF less than 40%–no. (%) | 515 (68.1) | 520 (68.0) | 1035 (68.0) | 0.95 |
| NYHA Class–no. (%) | ||||
| I | 41(5.4) | 47 (6.1) | 88(5.8) | 0.24 |
| II | 285(37.7) | 280(36.6) | 565(37.2) | |
| III | 373(49.3) | 398(52.0) | 771(50.7) | |
| IV | 57(7.5) | 40(5.2) | 97(6.4) | |
| Coronary Artery Disease–no. (%) | 404 (53.4) | 375 (49.0) | 779 (51.2) | 0.09 |
| Death within 180 days–no. (%) | 70 (9.3) | 72 (9.4) | 142 (9.3) | 0.92 |
*
19 Patients with missing information for Hispanic/Latino ethnicity group (12 TM, 7 UC)
†
44 Patients with missing information for Insurance status (17 TM, 27 UC)
‡
2 Patients with missing information for body mass index (1 TM, 1 UC)
Abbreviations: GFR, glomerular filtration rate; LVEF, left ventricular ejection fraction; ml, milliliters; mmHg, millimeters Mercury; mmol/L, millimoles per liter; NYHA, New York Heart Association; no., number; s.d, standard deviation; SBP, systolic blood pressure.
§
35 Patients with missing information for serum potassium (18 TM, 17 UC)
ǁ
121 Patients with missing information for GFR (61 TM, 60 UC)