Table 2 Baseline characteristics of social media authors

Unique author, n

195

530

162

Perspective, n (%)

Patient

868 (86.5)

921 (87.4)

436 (86.9)

Family/Friend

8 (0.8)

129 (12.2)

20 (4.0)

Physician

0 (0)

0 (0)

20 (4.0)

Hospital or physical therapy group

45 (4.5)

0 (0)

3 (0.6)

Professional Organization

79 (7.9)

1 (0.1)

11 (2.2)

News Media

0 (0)

0 (0)

2 (0.4)

Industry

3 (0.3)

3 (0.3)

10 (2.0)

Sex, n (%)

Female

851 (84.8)

1018 (96.6)

426 (84.9)

Male

36 (3.6)

36 (3.4)

30 (5.9)

Unknown

116 (11.6)

0 (0)

46 (9.2)

Ethnicity, n (%)

American Indian or Alaska Native

1 (0.1)

2 (0.2)

0 (0)

Asian

59 (5.9)

19 (1.8)

10 (2.0)

Black or African American

38 (3.8)

15 (1.4)

10 (2.0)

Hispanic or Latino

6 (0.6)

108 (10.2)

23 (4.5)

Native Hawaiian or Other Pacific Islander

1 (0.1)

7 (0.7)

0 (0)

White

682 (68.0)

867 (82.3)

409 (81.6)

Other or Unknown

216 (21.5)

36 (3.4)

50 (10.0)