For dichotomous outcomes, we used risk ratio (RR) with 95% CI to measure the treatment effects.

针对二分法的结果，我们使用风险比(RR)与95%信赖区间计算其治疗效果。

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There was insufficient evidence to determine the effect of SRP and community care in reducing the risk of CVD recurrence in patients with chronic periodontitis (risk ratio (RR) 0.72;

至于牙结石刮除-牙根整平术和社区照顾，可否减低慢性牙周炎患者心血管疾病复发的风险，则没有足够证据 （RR 0.72；

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