In the model of knowledge and attitude (model 1), the coefficient for the statement “Payment by DRGs is conducive to controlling the increase of medical expenses” was positive and highly significant ( P < 0.001), with a coefficient of 2.555 ( Supplementary Table 1 ).
Entries with positive impact coefficients that did not reach statistical significance may have a potentially positive impact and need to be further investigated by expanding the sample size, and for entries with both positive and negative impact coefficients or high P -values, there may be ambiguity in questioning or a lack of consensus in the perceptions of medical staff.