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Fig. 4 | BMC Oral Health

Fig. 4

From: Association of vitamin D in individuals with periodontitis: an updated systematic review and meta-analysis

Fig. 4

Forest plot of studies evaluating serum 25(OH)D/vitamin D levels in individuals with and without periodontitis. A Serum 25(OH)D levels. B Serum vitamin D levels. Gao, W-1: Gao, W-2000 IU/d vitamin D; Gao, W-2: Gao, W-1000 IU/d vitamin D; Ketharanathan,V–N: Ketharanathan,V-Norwegian; Ketharanathan,V-T: Keth- aranathan, V-Tamil; SMD: standardized mean difference; a: case–control study; b: RCT; c: Non-RCT; d: cross-sectional study

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BMC Oral Health

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