Abstract: Background　The implementation of Internet-based healthcare is conducive to the innovation of healthcare delivery models to meet residents' growing healthcare needs.However, searching the literature at home and abroad found that there were relatively few studies exploring the use of Internet medicine by doctors. Objective　To develop a questionnaire on doctors' intention towards using the Internet-based healthcare delivery model and to evaluate its reliability and validity.Methods　The initial draft of Questionnaire on Doctors' Intention Towards Using the Internet-based Healthcare Delivery Model（QDIUIHDM） was developed based on the frameworks of UTAUT and VAM models，including 10 dimensions and 27 items.Then，the questionnaire was used in a survey in an accidental sample of doctors from 3-6 pubic hospitals in 3 cities （Guangzhou，Shengzhen，Zhaoqing，1-2 pubic hospitals were sampled from each city） of Guangdong Province from November 2017 to January 2018.According to the survey results，the initial draft of questionnaire was evaluated by reliability analysis and the exploration factor analysis（EFA）.Then the questionnaire was modified in accordance with the analysis results，and was evaluated by confirmatory factor analysis（CFA），and after this，the final draft of the QDIUIHDM was developed.Results　A total of 350 doctors participated in the survey，and 309 of them（88.3%） responded effectively.The Cronbach's α coefficient for the initial draft of QDIUIHDM was 0.912，and for its dimensions ranged from 0.738 to 0.929.The KMO index was 0.914，and Bartlett's test was also acceptable with P<0.001 （χ2=5 227.92），thus EFA can be performed.Eight factors with eigenvalue greater than 1.000 were extracted by principal component analysis，and the cumulative contribution rate of which was 74.764%.Based on the results of EFA and research topic，dimensions of perceived usefulness and perceived effectiveness were incorporated in the perceived benefits dimension，but the dimensions of individual creativity and self-efficacy were retained.Thus the revised initial draft of QDIUIHDM includes 9 dimensions and 27 items.The CFA result showed an acceptable fit with χ2/df=1.682，GFI=0.900，RMSEA=0.047，CFI=0.961，NFI=0.911，IFI=0.962，PGFI=0.742，PNFI=0.783.The factor loading was between 0.638 and 0.894，the squared multiple correlation was between 0.407 and 0.837，the composite reliability was between 0.750 and 0.930，and the average variance extracted was between 0.502 and 0.815.Therefore，there are 9 dimensions in the final draft of the questionnaire：perceived benefits（6 items），perceived complexity of use（3 items），perceived risk （3 items），perceived value
（2 items），social influence（3 items），facilitating conditions（3 items），individual creativity（2 items），self-efficacy
（2 items） and intention-to-use （3 items）.Conclusion　The QDIUIHDM has been proved to be reliable and valid，which can be used to evaluate the doctors' intention toward using the Internet-based healthcare delivery model and its influencing factors.

Key words: Computer communication networks, Physicians, Internet healthcare, Usage intention, Reliability, Validity

摘要： 背景　互联网医疗有利于创新医疗服务模式，满足人们日益增长的医疗服务需求。但检索国内外文献发现，探索医生群体使用互联网医疗的研究相对较少。目的　编制医生群体对互联网医疗使用意愿调查问卷，并评价其信效度。方法　基于整合型科技接受模型（UTAUT模型）和价值接受模型（VAM模型）为理论基础，编制医生群体对互联网医疗使用意愿调查问卷（初始版），共包括10个维度，27个条目。2017年11月—至2018年1月，于广东省内3个城市（广州、深圳、肇庆）各抽取1~2家公立医院，采用偶遇抽样法抽取调查对象进行问卷调查。对医生群体对互联网医疗使用意愿调查问卷（初始版）进行信度分析、探索性因子分析，根据上述结果调整调查问卷，并进行验证性因子分析，得到最终问卷。结果　共发放调查问卷350份，回收有效问卷309份，有效回收率88.3%。医生群体对互联网医疗使用意愿调查问卷（初始版）的Cronbach's α系数为0.912，各维度的Cronbach's α系数介于0.738~0.929；KMO=0.914，Bartlett's球形检验χ2=5 227.92（P<0.001），表明适合进行探索性因子分析。选取主成分分析中特征值>1.000的因子，提取出8个公因子，累积方差贡献率为74.764%。结合探索性因子分析结果和研究主题进行分析，以感知获益维度涵盖感知有用性维度与感知有效性维度，个体创新性维度与自我效能保留维度。因此将医生群体对互联网医疗使用意愿调查问卷（初始版）调整为医生群体对互联网医疗使用意愿调查问卷，共包括9维度，27个条目。对医生群体对互联网医疗使用意愿调查问卷进行验证性因子分析，结果显示χ2/df=1.682，拟合优度指数（GFI）为0.900，近似误差均方根（RMSEA）为0.047，比较拟合优度指数（CFI）为0.961，规范拟合指数（NFI）为0.911、增值拟合指数（IFI）为0.962、节俭拟合指数（PGFI）为0.742、节俭规范拟合指数（PNFI）为0.783，模型各项适配度指标良好；问卷各条目因素负荷量介于0.638~0.894，信度系数介于0.407~0.837，问卷的组合信度介于0.750~0.930，平均差异量抽取值介于0.502~0.815。最终形成医生群体对互联网医疗使用意愿调查问卷，其维度分别为感知获益（共6个条目）、感知复杂性（共3个条目）、感知风险（共3个条目）、感知价值（共2个条目）、社会影响（共3个条目）、促成因素（共3个条目）、个体创新性（共2个条目）、自我效能（共2个条目）、使用意愿（共3个条目）。结论　医生群体对互联网医疗使用意愿调查问卷具有较好的信效度，可用于测量医生群体的互联网医疗使用意愿及其影响因素。

关键词: 计算机通信网络, 医师, 互联网医疗, 使用意愿, 信度, 效度