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Table 1 Inclusion and exclusion criteria

From: What is the prevalence of musculoskeletal problems in the elderly population in developed countries? A systematic critical literature review

Inclusion Exclusion
· Original observational studies or reports; primarily cross-sectional and cohort studies · If more than one article presenting results from the same study existed then only the most relevant article was included.
· Studies reporting results specifically on people aged 60 and over · No reviews, experimental or clinical trials, or studies with subsample of the original study sample, unless it is still a representative sample and reports new relevant information
· Representative of the general population (study samples from nursing homes, etc. are accepted) · No working populations
· Only following musculoskeletal (MSK) conditions: 1)Non-specific extremity MSK 2)Back pain (+ divided by region) 3)Osteoarthritis in larger joints of the extremities (i.e. shoulder, elbow, hand/wrist, hip, knee, ankle/foot) 4) Rheumatoid arthritis 5) Osteoporosis · No native/aboriginal populations
· Studies from developed countries only (e.g. countries with “advanced economies” according to IMF) · Studies reporting general MSK pain with no specific anatomical area
· Any type of prevalence/incidence · No traumatic related injuries
· Prevalence/incidence estimates specifically on people aged 60 and over · No secondary MSK conditions (i.e. osteoporotic fractures)
· In studies with results from more than one period/survey, only the latest · No combined anatomical sites (e.g. neck + shoulder pain), except for back pain which is usually low back pain.
· year was included · No OA in minor joints (such as in a single phalanx joint, facet joints, etc.)
  · Indirect/weighted/adjusted prevalence estimates.