at the margin of significancep = 0.0644
Using the Cox regression model (not shown in the results table), after controlling for other significant variables, a significant interaction between sex and change in exercise habits was found: (1) the interaction between sex and persistent physical inactivity showed a statistically significant difference (regression coefficient = 0.28157, p = 0.0016), and (2) the interaction between sex and improvement in exercise behavior was at the margin of significance (regression coefficient = 0.15915, p = 0.0644).