“…The degree of familiarity with the content of the questionnaires and their respective assignments were categorised as follows: extremely familiar (1.00); very familiar (0.80); generally familiar (0.60); less familiar (0.40) and unfamiliar (0.20). The judgement basis and influence degree of the research subjects were divided into four categories and three grades: practical experience (0.45, 0.35, 0.20), theoretical analysis (0.30, 0.20, 0.10), reference literature at home and abroad (0.20, 0.15, 0.10) and chosen by instinct (0.05, 0.05, 0.05); (c) coefficient of variation: A coefficient of variation ≥0.2 was set as the index deletion standard; (d) the Kendall coefficient of concordance (W) was used to evaluate the agreement among raters (Okoli & Pawlowski, ); (e) content validity index: it is usually used for quantitative evaluations of parameters including the entry‐level of content validity index and weight table level content validity index (Ruhl, Scheich, Onokpise, & Bingham, ). p < .05 was considered to indicate statistical significance for the differences.…”