Table 1

 Clinical and demographic data of 23 patients with RA, 16 patients with OA, and 8 patients with ReA

CharacteristicRA (n = 23)OA (n = 16)ReA (n = 8)
The data are shown as the mean (standard error of the mean) {range}.
ESR, erythrocyte sedimentation rate; CRP, C reactive protein; RF, rheumatoid factor.
Sex (M/F)9/142/146/2
Age (years)58 (3) {24−76}72 (2) {54−81}33 (4) {16−47}
Disease duration (months)7 (1) {2−12}5 (2) {1−18}
Total Ritchie score10 (1) {3−26}4 (1) {0−15}1 (1) {0−5}
Swollen joint count8 (1) {3−18}2 (1) {0−9}2 (0) {1−4}
ESR (mm/1st h)63 (7) {13−125}33 (6) {10−89}15 (4) {3−28}
CRP (mg/l)51 (9) {11−214}21 (7) {3−112}14 (7) {3−50}
RF (+/−)13/100/160/8