Variables | Positive Usability Group (n = 75) | Negative or Neutral Usability Group (n = 35) | Z/χ2 | p-value |
---|---|---|---|---|
Age | 66.00 (63.00, 70.00) | 68.00 (65.00, 72.00) | −2.03 | 0.043 |
Male | 49 (65.33%) | 25 (71.43%) | 0.40 | 0.526 |
Education |  |  | −8.58 | < 0.001 |
 Primary school and below | 17 (22.67%) | 11 (31.43%) |  |  |
 Junior high school | 37 (49.33%) | 14 (40.00%) |  |  |
 Senior high school and above | 21 (28.00%) | 10 (28.57%) |  |  |
History of chronic diseases | ||||
 Hypertension | 49 (65.33%) | 26 (74.29%) | 0.88 | 0.348 |
 Diabetes mellitus | 23 (30.67%) | 12 (34.29%) | 0.14 | 0.704 |
 Hyperlipidemia | 21 (28.00%) | 10 (28.57%) | 0.004 | 0.951 |
 Stroke | 33 (44.00%) | 9 (25.71%) | 3.38 | 0.066 |
 Coronary heart diseases | 8 (10.67%) | 4 (11.43%) | 0.01 | 0.905 |
Monthly income (ï¿¥) | Â | Â | 0.27 | 0.965 |
 ≤ 1000 | 11 (14.67%) | 5 (14.29%) |  |  |
 1001 ~ 3000 | 29 (38.67%) | 12 (34.29%) |  |  |
 3001 ~ 5000 | 28 (37.33%) | 14 (40.00%) |  |  |
 > 5000 | 7 (9.33%) | 4 (11.43%) |  |  |
Daily mobile phone use time |  |  | −0.64 | 0.521 |
 < 1 h | 36 (48.00%) | 16 (45.71%) |  |  |
 1 ~ 3 h | 33 (44.00%) | 14 (40.00%) |  |  |
 > 3 h | 6 (8.00%) | 5 (14.29%) |  |  |
Mobile phone use experience | Â | Â | 7.00 | 0.008 |
 Less experience | 29 (38.67%) | 23 (65.71%) |  |  |
 Moderate experience | 46 (61.33%) | 12 (34.29%) |  |  |