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Table 3 Quality assessment of the included case-control studies

From: Dairy product consumption and risk of hip fracture: a systematic review and meta-analysis

Newcastle-Ottawa Scale for assessing the quality of case control studies in meta-analysis
  Selection     Comparability Outcome    
Study Is the case definition adequate Representativeness of the cases Selection of controls Definition of controls Comparability of cases and controls on the basis of the design or analysis Ascertainment of exposure Same method of ascertainment for cases and controls Non-Response rate Quality score
1 Jha 2010       5
2 Lan 2010         4
3 Jitapunkul 2001         5
4 Kanis 1999   8
5 Johnell 1995   8
6 Tavani 1995   8
7 Cumming 1994   8
8 Nieves 1992   8
  1. A study can be awarded a maximum of one star for each numbered item within the Selection and Outcome categories. A maximum of two stars can be given for Comparability