Feasibility of a stepped wedge cluster RCT and concurrent observational sub-study to evaluate the effects of modified ward night lighting on inpatient fall rates and sleep quality: a protocol for a pilot trial

评估改良病房夜间照明对住院患者跌倒率和睡眠质量影响的阶梯楔形集群随机对照试验及同期观察性子研究的可行性：一项试点试验方案