Table 3.

Comparative analysis of top 10 features in osteoporosis prediction studies

	Non-RA			RA
Ranking	Erjiang et al. [26]	Park et al. [27]	Bui et al. [28]	Shodikulova et al. [29]	Hu et al. [30]	Yan et al. [20]	Chen et al. [21]	Lee et al. [22]	Our study
1	Age	Age	Age	Joint Activity	Age	Age	Serum Selenium	Body mass index	Weight
2	Weight	Menopause	Weight	Immunologic Variants	Body Mass Index	Disease Course	Bone Mineral Density	Age	Vitamin D Supplements
3	Bisphosphonate use	Alkaline phosphatase	Height	Age	Serum 25-hydroxyvitamin D3 Level	DAS28	Rheumatoid Factor	Menopause	Alendronate Sodium
4	Body Mass Index	Weight	Uric acid	Glucocorticoids	Tumor Necrosis Factor Inhibitor Usage	Anti-Cyclic Citrullinated Peptide Antibody	High-sensitivity C-Reactive Protein	Waist circumference	Daily physical activity level
5	Denosumab use	Forced vital capacity	Calcium	Hypocalcemia	Serum Uric Acid Level	7-Joint Ultrasonic Bone Erosion	Erythrocyte Sedimentation Rate	Hip circumference	Height
6	Estrogen use	Sobriety	Cholesterol	Family History of Bone Fractures	Disease Duration	/	History of Long-term Glucocorticoid Use	Surgery for RA	Age
7	Chronic Respiratory Disease	Aspartate aminotransferase	Creatinine	Menopause	/	/	RA Duration	Monthly income	Golimumab
8	Osteopenia	Diastolic blood pressure	Free thyroxine level	Back Pain and Joint Deformation	/	/	Family History of Osteoporosis	Age of diagnosis	Synovitis in Both Knees
9	Height loss	Riboflavin intake	Glucose	Physical Activity and Nutrition	/	/	Smoking History	Health assessment questionnaire	Alcohol Consumption History
10	Hormonal Therapy	Weight control by exercise	HbA1c	/	/	/	Body Mass Index	Number of swollen joints	Vitamin D level