Table 4.

Intercept and slope of each class.

Classes	Intercept (p)	Slope (p)
Class 1 (High-Increasing class)	22.218 (<0.001)	0.644 (<0.001)
Class 2 (Moderate-Increasing class)	17.073 (<0.001)	0.514 (<0.001)
Class 3 (Low-Stable class)	13.208 (<0.001)	0.063 (0.292)