an increasing trendp = 0.047
The model intercept, i.e., the initial value of dyadic coping of 112.60, showed an increasing trend in the subsequent three measurements [slope(S) = 0.228, p = 0.047], and there was a significant correlation between the intercept and the slope ( r = −0.488, p < 0.001), suggesting that there was a significant negative correlation between the initial state of dyadic coping in patients with malignant bone tumors and the speed of development, i.e., the higher the initial level of dyadic coping in patients with malignant bone tumors, the slower the rate of increase in the later stage ( Figure 3 ).