Fig. 1
From: Prevalence and risk factors for bone loss in Southern Chinese with rheumatic diseases
a: composition of rheumatic patients; b: comparison of impaired BMD between healthy subjects and all rheumatic patients, without age-stratification; c: prevalence of ‘score below the expected range for age’ in different groups; d: prevalence of osteopenia, osteoporosis, and severe osteoporosis in different groups. *: P < 0.05; **: P < 0.01;***: P < 0.001. HC: healthy controls; RA: rheumatoid arthritis; OA: osteoarthritis; SLE: systemic lupus erythematosus; SSc: systemic scleroderma; AS: ankylosing spondylitis; pSS: primary Sjogren syndrome; MCTD: mixed connective tissue disease