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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: Scand J Pain. 2014 Mar 1;5(3):161–166. doi: 10.1016/j.sjpain.2014.05.001

Table 1.

Characteristics of study sample as a whole and by affect balance style.

Demographics Total (n = 735) Healthy (n = 83) Low (n = 239) Reactive (n = 32) Depressive (n = 381) P Value
Age 55.8 ± 12.6 59.2 ± 14.2 57.6 ± 12.4 57.4 ± 14.9 53.9 ± 11.8 <.001
BMI 30.0 ± 7.4 28.5 ± 7.7 30.6 ± 7.3 28.7 ± 6.8 30.1 ± 7.5 0.10
Sex 0.78
    Female 683 (93%) 76 (92%) 223 (93%) 31 (97%) 353 (93%)
    Male 52 (7%) 7 (8%) 16 (7%) 1 (3%) 28 (7%)
Race 0.26
    White 665 (90%) 81 (98%) 218 (91%) 27 (84%) 339 (89%)
    Other 17 (2%) 1 (1%) 5 (2%) 1 (3%) 10 (3%)
    Unknown 53 (7%) 1 (1%) 16 (7%) 4 (13%) 32 (8%)
FIQ-R 55.9 ± 19.0 40.2 ± 17.5 48.0 ± 16.3 53.0 ± 18.9 64.6 ± 16.3 <.001
Positive Affect 26.8 ± 8.4 39.5 ± 3.1 26.3 ± 7.7 38.8 ± 2.1 23.3 ± 6.2 <.001
Negative Affect 21.5 ± 8.5 13.8 ± 2.4 13.6 ± 3.5 26.6 ± 5.5 27.6 ± 6.1 <.001

a Values are given as the number (percentage) or mean± standard deviation.

BMI = Body Mass Index; FIQ-R = Revised Fibromyalgia Impact Questionnaire.