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. 2019 Jan 14;7(1):e12228. doi: 10.2196/12228

Table 3.

Statistical results of device ownership and use among patients with hypertension. Sample sizes reflect the number of participants with nonmissing values for device questions and characteristics.

Parameter Wald chi-square value F-adjusted chi-square value P value
Age group

“Yes” to having a tablet (N=1389) 62.566 14.68 <.001

“Yes” to having a smartphone (N=1379) 140.397 32.95 <.001

“Yes” to having a mobile phone (N=1350) 52.49 12.32 <.001

“Yes” to having a tablet or smartphonea (N=1396) 121.111 28.42 <.001

“Yes” to having a tablet and smartphoneb (N=1377) 75.7 17.77 <.001
Race/ethnicity

“Yes” to having a tablet (N=1274) 6.638 1.56 .20

“Yes” to having a smartphone (N=1267) 1.69 0.40 .81

“Yes” to having a mobile phone (N=1246) 3.29 0.77 .55

“Yes” to having a tablet or smartphonea (N=1277) 0.95 0.22 .92

“Yes” to having a tablet and smartphoneb (N=1266) 1.57 0.369 .83
Gender

“Yes” to having a tablet (N=1432) 0.9871 .33

“Yes” to having a smartphone (N=1419) 0.2128 .65

“Yes” to having a mobile phone (N=1389) 0.5645 .46

“Yes” to having a tablet or smartphonea (N=1440) 0.0587 .81

“Yes” to having a tablet and smartphoneb (N=1417) 1.134 .29
Education

“Yes” to having a tablet (N=1410) 55.912 17.88 <.001

“Yes” to having a smartphone (N=1398) 64.93 20.76 <.001

“Yes” to having a mobile phone (N=1370) 28.07 8.975 <.001

“Yes” to having a tablet or smartphonea (N=1417) 63.70 20.365 <.001

“Yes” to having a tablet and smartphoneb (N=1396) 43.498 13.91 <.001

aIncludes participants with nonmissing values for either device question (tablet or smartphone).

bIncludes participants with nonmissing values for both device questions (tablet and smartphone).