Table 4.

Linear Regression Model, Using Imputed Data (Dependent Variable: 6‐month Patient Activation Measure Score)

Parameter	Estimate	95% CI		P Value
		Lower CI	Upper CI
Intervention (Patient Activation Measure score)	−5.078008	−8.5995	−1.55654	0.0052
Control (Patient Activation Measure)	0	0	0
Patient Activation Measure, baseline	0.327371	0.2168	0.43794	<0.0001
Prior Twitter use	0.079464	−3.6582	3.81717	0.9664
Age	−0.214689	−0.4264	−0.00293	0.047
Sex, female	3.555223	−0.6404	7.75087	0.0952
Race
White	3.880341	−7.0513	14.81203	0.4767
Black	1.870976	−9.1713	12.9133	0.7332
Education
Some college	1.830316	−3.77	7.43064	0.5189
College graduate	−1.333709	−7.3367	4.66931	0.6603
High school or lower	0	0	0
Employment
Employed	−3.080747	−8.4087	2.24716	0.254
Out of work	−5.483832	−12.6144	1.64674	0.1297
Homemaker	−8.649631	−17.5633	0.26404	0.057
Student	−16.737641	−46.0606	12.58533	0.2574
Retired	0	0	0
Income
Unknown	−0.658108	−6.5662	5.25	0.8267
≥$100 000	−1.83095	−6.8688	3.20691	0.4733
$50 000–$99 999	−1.282237	−6.4559	3.89147	0.6225
<$50 000	0	0	0
Self‐reported health, self‐rated health, 1 question (SF1)
Good	2.994807	−1.6391	7.62876	0.2007
Poor	−1.276883	−8.5703	6.01653	0.7285
Very good	7.198015	−0.2161	14.6121	0.0569
Very poor	−6.03759	−22.0403	9.96515	0.4545
Fair	0	0	0
Body mass index	−0.047398	−0.2365	0.14173	0.6205