检视直接复合树脂充填与汞齐充填恒久后牙的效果，主要针对修复术失败。
To examine the effects of direct composite resin fillings versus amalgam fillings for permanent posterior teeth, primarily on restoration failure.
检视各种形式的心理治疗对于虑病症的治疗效果与相对效果。
To examine the effectiveness and comparative effectiveness of any form of psychotherapy for the treatment of hypochondriasis.
未来的试验应检视能预测各种治疗效果的预测因素，并且做成本效益的评估。
Future trials should examine the predictors of response to each treatment, and also conduct cost-effectiveness evaluations.
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