Table 3.

The association between erosive and non-erosive hand osteoarthritis (OA) and bone mineral density of the femoral neck (linear regression analyses)

	Crude B (95% CI)	Adjusted B (95% CI)*
Model 1 (comparison of three groups of participants)
No DIP/PIP OA (ref)	0.00	0.00
Erosive OA	−0.06 (−0.08, −0.03)	0.01 (−0.01, 0.03)
Non-erosive OA	−0.02 (−0.03, −0.01)	0.01 (−0.001, 0.02)
Model 2 (number of affected DIP/PIP joints) (all participants, one model)
Erosive joints	−0.007 (−0.011, −0.003)	−0.001 (−0.005, 0.003)
Non-erosive joints	−0.005 (−0.007, −0.003)	0.002 (−0.001, 0.004)

^*Adjusted for age, sex and BMI.

B, regression coefficient (unstandardised β); BMI, body mass index; DIP, distal interphalangeal; PIP, proximal interphalangeal.