Analysis of the reasons for the invalidation of residents' health literacy questionnaire

1. First of all, there are too many missed answers in the questionnaire, which is generally subject to two-thirds of the total number of missed answers. For example, there are 10 questions, which is an invalid questionnaire.

2. Secondly, the questionnaire has reverse questions. If there is a contradiction between the positive and negative questions, it will be regarded as an invalid questionnaire.

3. The final topic is a multiple-choice question, but fill in two or more options.