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Table 1 The CASP quality assessment scale (N = 6)

From: Efficacy of vitamin C supplementation as an adjunct in the non-surgical management of periodontitis: a systematic review

Author Part 1 Part 2 Part 3 Part 4 Part 5 Part 6 Part 7 Part 8 Part 9 Quality
Abou Sulaiman and Shehadeh [19], Syria 1 1 1 1 1 1 1 1 1 High
Shimabukuro et al. [21], Japan 1 1 1 1 1 1 1 1 1 High
Gokhale et al. [20], India 1 1 1 1 1 1 1 1 1 High
Kunsongkeit et al. [16], Thailand 1 1 1 1 1 1 1 1 1 High
Chitsazi et al. [17], Iran 1 1 1 1 1 1 1 1 1 High
Dodington et al. [18], Canada 1 1 0 0 0 1 1 1 1 Moderate