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. Author manuscript; available in PMC: 2012 Apr 1.
Published in final edited form as: Pain. 2011 Apr;152(4):866–877. doi: 10.1016/j.pain.2011.01.003

Table 1.

Demographic Data for Each Experimental Condition, for Patients in the Writing Sample (Top) and Speaking Sample (Bottom)

Sample / Variable
Full Sample
Disclosure
Combined Control
Positive Control
Neutral Control
Writing Sample





    Female n (%) 74 (84%) 38 (88.4%) 36 (80%) 19 (79%) 17 (81%)
    Male n (%)
14 (16%)
5 (11.6%)
9 (20%)
5 (21%)
4 (19%)
    Ethnicity n (%)
    European American 46 (52%) 24 (55.8%) 22 (48.9%) 11 (45.8%) 11 (52.4%)
    African American 41 (47%) 18 (41.9%) 23 (51.1%) 13 (54.2%) 10 (47.6%)
    Hispanic American
1 (1%)
1 (2.3%)
0 (0%)
0 (%)
0 (0%)
    Age M (SD)
54.9 (10.8)
55.4 (11.7)
54.3 (10.0)
53.1 (10.0)
55.7 (10.0)
    Education M (SD)
13.6 (2.4)
13.4 (2.4)
13.8 (2.3)
14.0 (2.7)
13.6 (1.7)
    RA Duration M (SD)
13.2 (11.3)
14.6 (11.4)
12.0 (11.1)
11.3 (9.3)
12.8 (13.1)
Speaking Sample





    Female n (%) 78 (84%) 40 (83.3%) 38 (84.4%) 20 (83.3%) 18 (85.7%)
    Male n (%)
15 (16%)
8 (16.7%)
7 (15.6%)
4 (16.7%)
3 (14.3%)
    Ethnicity n (%)
    European American 54 (58%) 28 (58.3%) 26 (57.8%) 13 (54.2%) 13 (61.9%)
    African American 38 (41%) 20 (41.7%) 18 (40%) 11 (45.8%) 7 (33.3%)
    Hispanic American
1 (1%)
0 (0%)
1 (2.2%)
0 (0%)
1 (4.8%)
    Age M (SD)
54.3 (11.6)
53.1 (11.3)
55.5 (11.9)
58.0 (12.2)
52.6 (11.1)
    Education M (SD)
13.5 (2.6)
13.1 (2.4)
14.0 (2.7)
14.5 (3.1)
13.4 (2.1)
    RA Duration M (SD) 9.3 (8.4) 9.0 (7.6) 9.6 (9.3) 10.2 (11.0) 8.9 (7.1)