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Table 5 Univariate vs multivariate regression model of the IPFP area and patient demographics as well as individual manifestations of OA

From: Infrapatellar fat pad area on knee MRI: does it correlate with the extent of knee osteoarthritis?

Variables Univariate Multivariate
Unstandardized B Standardized B P value Unstandardized B Standardized B P value
Age − 0.088 − 0.367 < 0.001 − 0.016 − 0.062 0.396
Gender − 0.320 − 0.093 0.202 − 0.279 − 0.081 0.271
BMI − 0.096 − 0.161 0.018 0.161 0.259 0.167
X-ray
 Joint space narrowing − 1.048 − 0.536 < 0.001 − 0.058 − 0.25 0.935
 Osteophites − 1.089 − 0.552 < 0.001 0.653 0.309 0.416
 OA Grading − 1.533 − 0.658 < 0.001 − 2.241 − 0.848 < 0.001
MRI
 Cartilage defects: − 0.666 − 0.477 < 0.001 − 0.177 − 0.127 0.184
 BM lesions − 0.858 − 0.394 0.003 − 0.022 − 0.010 0.895
 SC fat thickness − 0.150 − 0.160 0.019 − 0.286 − 0.284 0.142