Table 1
Results of mixed model analysis
Fixed effects
Value
SE
Degree of freedom
t Value
p Value
A: The results of linear expression analysis
x: age
m
: −0.003
0.0015
1091
−2
0.045
B: The results of quadratic formula analysis
x
2
: age
2
a
: 0.00026
0.000102
1090
2.55
0.0107