Table 2 Text message outcomes.
Control (n = 4231) | Texting (n = 4201) | Intention-to-treat analysis | Instrumental variable analysis | |||
|---|---|---|---|---|---|---|
n (%) | n (%) | Difference (%) | p-value | Difference (%) | p-value | |
Outcomes captured at 120 days | ||||||
Primary care visit | 1913 (45.2) | 1888 (44.9) | −0.27 | 0.80 | −0.88 | 0.80 |
IHA completion | 1906 (45.0) | 1882 (44.8) | −0.25 | 0.82 | −0.80 | 0.82 |
Emergency visit | 677 (16.0) | 682 (16.2) | 0.23 | 0.77 | 0.75 | 0.77 |
Avoidable emergency visit | 115 (2.7) | 103 (2.5) | −0.27 | 0.44 | −0.86 | 0.44 |
Outcomes captured at 1 year | ||||||
Primary care change | 2309 (54.6) | 2302 (54.8) | 0.22 | 0.84 | 0.72 | 0.84 |
Emergency visit | 1279 (30.2) | 1374 (32.7) | 2.48 | 0.01 | 8.97 | 0.01 |
Avoidable emergency visit | 241 (5.7) | 257 (6.1) | 0.42 | 0.41 | 1.36 | 0.41 |
Preventive management | ||||||
Lipid panel | 1417 (33.5) | 1443 (34.3) | 0.86 | 0.41 | 2.76 | 0.41 |
Hemoglobin A1c | 567 (13.4) | 592 (14.1) | 0.69 | 0.36 | 2.22 | 0.36 |
Chronic illness diagnosis | ||||||
Any illness | 1176 (27.8) | 1219 (29.0) | 1.22 | 0.21 | 3.93 | 0.21 |
Asthma | 192 (4.5) | 221 (5.3) | 0.72 | 0.12 | 2.33 | 0.12 |
COPD | 16 (0.4) | 13 (0.3) | −0.07 | 0.59 | −0.22 | 0.59 |
Depression | 375 (8.9) | 409 (9.7) | 0.87 | 0.17 | 2.81 | 0.17 |
Diabetes | 353 (8.3) | 364 (8.7) | 0.32 | 0.60 | 1.03 | 0.60 |
Dyslipidemia | 308 (7.3) | 325 (7.7) | 0.46 | 0.43 | 1.47 | 0.43 |
Hypertension | 575 (13.6) | 601 (14.3) | 0.72 | 0.34 | 2.30 | 0.34 |
Ischemic heart disease | 90 (2.1) | 98 (2.3) | 0.21 | 0.52 | 0.66 | 0.52 |
