Elaboration and validity and reliability analysis of a questionnaire to assess the knowledge of primary care physicians and nurses about trachoma

Abstract Objective: To develop and analyze the validity and reliability of a questionnaire to assess the knowledge of primary care physicians and nurses about trachoma. Methods: This is a methodological study of elaboration and analysis of validity and reliability of an instrument (questionnaire). The following steps were developed: 1) identification of updated source literature on the subject; 2) elaboration of the questionnaire items by the researchers; 3) content validation by experts; 4) construct validation with instrument application and hypothesis test analysis; 5) internal consistency analysis and; 6) temporal stability analysis (test-retest). Results: The study included 205 primary health care physicians and nurses and 10 specialists in ophthalmology and infectology. The instrument, initially with 52 items, was left with 41 items after all stages. The instrument was able to adequately discriminate professionals with greater and lesser knowledge, according to the hypothesis test (p摘要 研究目的：开发并分析一款用于评估基层全科医生与护士沙眼（trachoma）认知水平的问卷（questionnaire）的效度与信度。 研究方法：本研究属于针对某评估工具（questionnaire）的效度与信度分析类方法学研究，具体实施步骤如下：1）检索该主题的最新相关文献；2）由研究人员拟定问卷条目；3）邀请专家开展内容效度（content validation）验证；4）通过工具施测与假设检验（hypothesis test）分析完成结构效度（construct validation）验证；5）内部一致性分析（internal consistency analysis）；6）时间稳定性分析（重测信度，test-retest）。 研究结果：本研究共纳入205名基层医疗卫生机构的医护人员及10名眼科（ophthalmology）与感染科（infectology）专科医师。初始包含52个条目的问卷经全部研究流程后最终保留41个条目。经假设检验分析，该工具可有效区分知识水平高低不同的医护人员（p