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Table 4 Assessment of the quality of included observational studiesa

From: The effect of donor human milk on the length of hospital stay in very low birthweight infants: a systematic review and meta-analysis

  Selection Comparability Outcome Total
Lee et al. [44] 4 0 2 6
Kreissl et al. [43] 4 0 3 7
Kim et al. [42] 4 2 3 9
Colaizy et al. [39] 4 2 3 9
Chowning et al. [38] 4 2 3 9
Hair et al. [41] 4 0 3 7
Madore et al. [45] 4 2 3 9
Ginovart et al. [40] 4 0 3 7
  1. a Numbers represent the total number of stars obtained by the observational study in each quality domain