Table 1.
Demographic characteristics of the control group and WeChat group (N=2930).
| Demographic characteristic | Control group (n=735), n (%) | WeChat group (n=2195), n (%) | Chi-square (df)a | P valuea | |||||
| Inactive (n=1457) | Active (n=738) | Total |
|
|
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| Gender |
|
|
|
|
41.88 (2) | <.001 | |||
|
|
Male | 223 (30.34) | 422 (28.96) | 312 (42.28) | 734 (33.44) |
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|
||
|
|
Female | 512 (69.66) | 1035 (71.04) | 426 (57.72) | 1461 (66.56) |
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||
| Age group (years) |
|
|
|
|
400.194 (2) | <.001 | |||
|
|
<65 | 339 (46.12) | 543 (37.27) | 605 (81.98) | 1148 (52.30) |
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|
||
|
|
≥65 | 396 (53.88) | 914 (62.73) | 133 (18.02) | 1047 (47.70) |
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| Education levelb |
|
|
|
|
482.017 (4) | <.001 | |||
|
|
Low | 597 (81.22) | 1286 (88.26) | 444 (60.16) | 1730 (78.82) |
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||
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Medial | 87 (11.84) | 123 (8.44) | 40 (5.42) | 163 (7.43) |
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|
High | 51 (6.94) | 48 (3.29) | 254 (34.42) | 302 (13.76) |
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| Surgery type |
|
|
|
|
379.55 (10) | <.001 | |||
|
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THAc | 162 (22.04) | 410 (28.14) | 462 (62.60) | 872 (39.73) |
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HAd | 23 (3.13) | 43 (2.95) | 7 (0.95) | 50 (2.28) |
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THRe | 9 (1.22) | 59 (4.05) | 28 (3.79) | 87 (3.96) |
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TKAf | 488 (66.39) | 886 (60.81) | 215 (29.13) | 1101 (50.16) |
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UKAg | 41 (5.58) | 29 (1.99) | 21 (2.85) | 50 (2.28) |
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TKRh | 12 (1.63) | 30 (2.06) | 5 (0.67) | 35 (1.60) |
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aChi-square and P values indicate differences between the control group, inactive group, and active group.
bEducation level: low, compulsory education; medial, high school or equivalent; high, university/college or above.
cTHA: total hip arthroplasty.
dHA: hemiarthroplasty.
eTHR: total hip revision.
fTKA: total knee arthroplasty.
gUKA: unicompartmental knee arthroplasty.
hTKR: total knee revision.