Table 1: Criteria for inclusion and exclusion of studies in the review.

Population Chronic Renal Failure Patients Stage G3 to G5
Phenomenon of interest The phenomenon of interest included
• Measure of bone mineral density in CKD patients
• Prevalence of osteopenia and osteoporosis among CKD patients
Primary outcome measure The outcome measures of interest included but were not restricted to the following:
• Method used for studying the prevalence of osteoporosis in CKD patients
• Impact of CKD stage and other factors on BMD levels
• Difference in T score values for different sites among CKD patients
Types of studies Quantitative cross-sectional / longitudinal clinical studies. Studies were included if they reported one or more of the outcomes detailed above
Exclusions Following were excluded
• Studies involving renal transplant patients
• Studies not measuring bone mineral density
• Studies not reporting the T score for BMD test
• Studies not measuring both osteopenia and osteoporosis
• Studies not following WHO criteria for osteoporosis using BMD T score values.
• Studies including CKD patients having GFR values >60ml/min
• Studies involving patient receiving medication known to influence bone and mineral metabolism such as corticosteroids, immunosuppressants, hormone replacement therapy, anticoagulants, lithium and anticonvulsants, etc.
• Studies involving patients below 18 years of age