Sibling of PA (present/absent) | Age (per 10 year increase) | Sex (Female/male) | BMI (kg/m2) (WHO criterion†) | Knee pain (present/absent) | CC (present/absent) | OA (present/absent) | |
---|---|---|---|---|---|---|---|
CC, chondrocalcinosis; OA, osteoarthritis; PA, pyrophosphate arthropathy; N/A, not appropriate. | |||||||
*p⩽0.05; **p⩽0.01. | |||||||
†WHO criteria for BMI: normal (<25 kg/m2), overweight (25–29.99 kg/m2), and obese (⩾30 kg/m2). | |||||||
All CC | 1.16 (0.58 to 2.29) | 2.25 (1.79 to 2.82)** | 0.76 (0.52 to 1.10) | 0.90 (0.70 to 1.14) | 1.76 (1.15 to 2.69)** | N/A | 1.71 (1.15 to 2.55)** |
Isolated CC | 1.07 (0.41 to 2.78) | 1.87 (1.41 to 2.48)** | 0.92 (0.55 to 1.52) | 0.87 (0.63 to 1.20) | 1.35 (0.80 to 2.30) | N/A | N/A |
All OA | 2.17 (1.35 to 3.48)** | 2.15 (1.83 to 2.45)** | 0.96 (0.76 to 1.21) | 1.48 (1.27 to 1.71)** | 3.74 (2.89 to 4.83)** | 1.70 (1.14 to 2.53)** | N/A |
Isolated OA | 1.74 (1.10 to 2.76)* | 1.85 (1.63 to 2.10)** | 1.02 (0.81 to 1.29) | 1.48 (1.28 to 1.72)** | 3.27 (2.52 to 4.24)** | N/A | N/A |
PA | 1.09 (0.44 to 2.68) | 2.88 (2.10 to 3.93)** | 0.64 (0.38 to 1.06) | 1.01 (0.72 to 1.41) | 2.97 (1.68 to 5.43) | N/A | N/A |