Table 1 Sharp score is positively associated with Health Assessment Questionnaire (HAQ) score independently of Disease Activity Score (DAS): generalised mixed linear modelling*
ParameterRegression coefficientp Value95% CI of the regression coefficient
Lower boundUpper bound
Intercept−0.1250.26−0.3420.092
Sex (F)−0.243<0.001−0.333−0.152
Age (years)0.0103<0.0010.00730.0133
Disease duration (years)0.00590.174−0.00260.0143
CRP (mg/dl)0.0029<0.0010.00140.0044
Treatment0.01040.67−0.03690.0577
DAS0.255<0.0010.2400.2688
Sharp score (Sharp units)0.0019<0.0010.00110.0027
  • *Dependent variable: HAQ.

  • CRP, C-reactive protein.