Table 2 Association of overweight with osteoarthritis of the different hand joint groups.

	BMI >27.4 kg/m2 OR (95% CI)*	BMI >27.4 kg/m2 OR (95% CI)†	BMI (continuous), OR (95% CI)†
Hand OA	1.4 (1.2 to 1.7)	1.4 (1.1 to 1.6)	1.04 (1.01 to 1.07)
OA in the hand joint groups
DIPs	1.4 (1.2 to 1.6)	1.4 (1.2 to 1.6)	1.05 (1.03 to 1.08)
PIPs	1.4 (1.1 to 1.7)	1.3 (1.1 to 1.6)	1.06 (1.03 to 1.1)
MCPs	1.5 (1.1 to 2.0)	1.5 (1.1 to 2.0)	1.1 (1.0 to 1.1)
Base of thumb	1.1 (1.0 to 1.3)	1.1 (1.0 to 1.3)	NS

BMI, body mass index; DIP, distal interphalangeal; MCP, metacarpophalangeal; OA, osteoarthritis; PIP, proximal interphalangeal.

Hand OA: presence of Kellgren–Lawrence ⩾2 in two of three hand joint groups (DIP, PIP, first carpometacarpal and trapezioscaphoid ).

*Adjusted for age, gender and smoking

†Adjusted for age, gender, smoking, diabetes, hypertension and total cholesterol: high‐density lipoprotein‐cholesterol.