Table 3

 Serological tests in diagnosis of early RA (several answers possible)

% Responses in questionnaires
1997 (n = 54)2000 (n = 44)2003 (n = 46)
NA, not available.
Rheumatoid factor10010097.2
Antinuclear antibodies72.268.278.3
Antikeratin antibodies5.69.18.7
Antiperinuclear factor13.09.18.7
Anti-RA333.76.82.2
Anti-CCPNANA17.4