Table 3.

Model fit summary for the growth.

Source	Sum of squares	Degree of freedom	Mean square	F value	P value	Prob > F
Mean versus total	12.29	1	12.29
Linear versus mean	5.25	3	1.75	7.57	0.0023
2FI versus linear	0.79	3	0.26	1.18	0.3567
Quadratic versus 2FI	2.11	3	0.70	8.70	0.0039	Suggested
Cubic versus quadratic	0.43	4	0.11	1.70	0.2674	Aliased
Residual	0.38	6	0.06
Total	21.24	20	1.06