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. 2020 Apr 24;228(8):615–622. doi: 10.1038/s41415-020-1452-7

Table 4.

Forest plot of the subgroup analysis of the RCTs. Review: enhanced oral hygiene maintenance for the prevention of non-ventilated pneumonia. Comparison: professional dental care versus usual care. Outcome: prevention of pneumonia

Study Experimental Control Risk ratio RR 95% CI Weight
Events Total Events Total
Adachi (2002) 5 40 9 48

graphic file with name 41415_2020_1452_Fig4_HTML.jpg

0.67 (0.24; 1.83) 16.8%
Ohsawa (2003) 5 25 6 24 0.80 (0.28; 2.28) 15.7%
Yoneyama (2002) 21 184 34 182 0.61 (0.37; 1.01) 67.5%
Random effects model 249 254 0.65 (0.43; 0.98) 100.0%
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Heterogeneity: I2 = 0%, tau2 = 0, p = 0.90