Table 2B.

Raw and PSD-adjusted scores for FM+ patients diagnosed with RA or FM.

Variables	Unadjusted PSD		Differences^⋄
Variables	RA, n = 2642, Mean (SD) or %	FM, n = 806, Mean (SD) or %	Unadjusted Difference	Unadjusted ES	Adjusted Difference
Figure 2
Pain, 0–10	6.4 (2.2)	6.6 (2.1)	−0.17^†	0.09	−0.06^†
Global, 0–10	6.0 (2.1)	6.1 (2.0)	−0.09^†	0.04	0.02^†
HAQ, 0–3	1.6 (0.6)	1.3 (0.6)	0.26	−0.45	0.27
QoL, 100–0^*	52.3 (18.5)	51.9 (19.1)	0.75^†	−0.02	0.22^†
Figure 3
WPI, 0–19	13.2 (4.4)	13.7 (5.7)	−0.44	0.11	0.34
SSS, 0–12	7.6 (1.9)	8.2 (2.0)	−0.53	0.32	0.34
Symptoms, 0–36	15.1 (6.4)	16.6 (6.1)	−1.29	0.24	−0.86
Joint count, 0–18	14.4 (3.8)	12.8 (4.6)	1.62	0.38	1.80
Figure 4
Opioids	49.9	53.6	−3.38^†	0.87^Δ	−2.69^†
Pregabalin	7.3	21.7	−14.15	0.29^Δ	−12.26
Prednisone	34.2	6.1	27.69	7.72^Δ	−26.20
Smoking	16.1	20.5	−4.09	0.75^Δ	−4.46
Other variables
BMI	31.1 (8.2)	32.1 (8.0)	−0.71	0.11	−0.50^†
Income, US$	44,952 (30,547)	44,379 (30,129)	1103^†	−0.02	−398^†
PCS, 100–0^*	28.7 (7.6)	29.6 (97.6)	−0.90	0.13	−0.98
MCS, 100–0^*	39.4 (11.4)	38.1 (11.6)	1.14	0.11	0.76^†
College^*	29.8	30.9	0.03^†	1.00^Δ	−0.82^†

↵* Lower values are more abnormal.
↵† p > 0.05.
↵⋄ Adjusted and unadjusted differences refer to adjustment by PSD values, and all variables are adjusted for age and sex.
↵Δ Unadjusted OR. FM: fibromyalgia; RA: rheumatoid arthritis; PSD: polysymptomatic distress; ES: effect size; HAQ: Health Assessment Questionnaire; QoL: Quality of Life; WPI: widespread pain index; SSS: symptom severity scale; BMI: body mass index; PCS: physical component summary of Medical Outcomes Study Short Form-36 (SF-36); MCS: SF-36 mental component summary.