Development and evaluation of questionnaire on knowledge, belief and practice ofperioperative nurses in prevention of deep venous thrombosis / 中国实用护理杂志

ABSTRACT

Objective:To compile and evaluate the questionnaire of knowledge, belief and practice of perioperative nurses in the prevention of deep venous thrombosis (DVT) in order to provide a tool for further investigation of the status quo of nursing care in the prevention of DVT during perioperative period.Methods:Based on the theoretical model of knowledge, belief and practice, a questionnaire item pool was established by literature reading and semi-structured interviews, and an initial questionnaire was formed by Delphi expert inquiry. It was convenient to select 197 nurses engaged in surgery and operating room nursing in Qingdao Municipal Hospital Affiliated to Qingdao University to carry out the pre questionnaire, and to carry out the differentiation levels,relevance coefficient analysis and reliability and validity test were used to form a formal questionnaire.Results:After two rounds of Delphi expert inquiries, three items with lower assignment value and four items with modified contents were deleted to form the initial questionnaire. The positive coefficients of experts in two rounds of inquiry were 85.00% and 100.00%, respectively; the Kendall's harmonious coefficients of experts were 0.195 and 0.204 ( P<0.01); and the authoritative coefficients of experts were 0.836 and 0.849. Four items were deleted from 197 pre-survey questionnaires by discriminatory analysis, correlation coefficient analysis and reliability and validity test. The Item Level Validity (I-CVI) of the total questionnaire was 0.800-1.000, and the Scale Level Validity (S-CVI) was 0.825. In the structural validity analysis, the KMO value of each item was 0.824, the Bartlett spherical test value was 3170.304, P < 0.01. Twelve common factors with eigenvalues greater than 1 were extracted, and the cumulative variance contribution rate was 66.11%. The intrinsic consistency Cronbach a coefficient of the total questionnaire was 0.859, and the retest reliability was 0.706. Finally, a formal questionnaire with 40 items in 15 knowledge dimensions, 10 belief dimensions and 15 behavior dimensions was formed. Conclusion:The reliability and validity of the questionnaire are well evaluated, and it can be used as a tool for investigating the knowledge, belief and practice of perioperative nurses in preventing deep venous thrombosis.