Longitudinal stability of fibromyalgia symptom clusters

Table 1 Patient characteristics at baseline (N = 433)

Characteristic	Value^a
Age, years	56 (20–85)
BMI, kg/m²	29 (13–58)
BMI category	(n = 431)
< 25 kg/m²	114 (26)
25–29.99 kg/m²	125 (29)
30–34.99 kg/m²	98 (23)
≥ 35 kg/m²	94 (22)
FIQR total score	57 (8–96)
SF-36 physical composite score	30 (8–53)
SF-36 mental composite score	41 (7–67)
FM Research Survey Criteria, WPI	13 (3–19)
FM Research Survey Criteria, SS	9 (5–12)

BMI body mass index, FIQR Revised Fibromyalgia Impact Questionnaire, FM fibromyalgia, SF-36 36-Item Short Form Survey Instrument, SS symptom severity score, WPI widespread pain index
^aValues are median (range) or number of patients (%)

ISSN: 1478-6362