From:  Impact of disease activity on patient-reported subjective cognitive decline in patients with rheumatoid arthritis

Baseline characteristics with SCD and no SCD

VariableNo SCD* (n = 30,496)SCD (n = 3,041)P+
Mean± SDMean± SD
Age62.52± 13.3760.66± 14.19< 0.001
BMI29.54± 7.2130.76± 7.94< 0.001
Duration of RA (years)12.92± 10.7611.18± 10.12< 0.001
CDAI10.11± 10.7616.16± 12.50< 0.001
28 TJC3.02± 5.215.41± 6.84< 0.001
28 SJC2.26± 3.862.93± 4.30< 0.001
PGA30.74± 26.5851.5± 27.03< 0.001
EGA17.57± 19.4926.66± 23.23< 0.001
Fatigue VAS35.7± 29.6063.03± 27.29< 0.001
HAQ0.76± 0.711.38± 0.72< 0.001
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* SCD determined with patient self-report of difficulty thinking and confusion; + means compared using t tests, categorical variables compared using Fisher’s exact test. HAQ: Health Assessment Questionnaire; VAS: Visual Analog Scale; SD: standard deviation