Model for total patella cartilage volume | r2 | p Value for delta r2 compared with the specified model | ΔF with addition to the model (p value for ΔF as for Δr2) |
---|---|---|---|
Bone volume only (+) | 0.27 | < 0.001 | N/A |
Bone volume (+) age (-) | 0.30 | 0.003 compared with bone volume only | 8.93 |
Bone volume (+) age (-) smoking, alcohol | 0.31 | p = 0.65 compared with bone volume and age | 0.43 |
Bone volume (+) age (-) smoking, alcohol, BMI | 0.32 | p = 0.06 compared with bone volume, age, smoking and alcohol | 3.54 |
Bone area (+) age (-), smoking, alcohol, ln hsCRP | 0.32 | p = 0.19 compared with bone volume, age, smoking, alcohol | 1.78 |
Bone area (+) age (-) smoking, alcohol, BMI ln hsCRP | 0.33 | p = 0.15 compared with bone volume age smoking alcohol | 1.92 (both variables added together); if BMI added first, ΔF = 3.54, (p for ΔF = 0.06) followed by lnCRP ΔF = 0.31, (p for ΔF = 0.58); if ln CRP added first, ΔF = 1.78, (p for Δ= F 0.19) followed by BMI ΔF = 2.05, (p for ΔF = 0.15). |