Table 2 Estimated coefficients of the linear effects in the generalized additive mixed model.

α ₀

0.781362

0.0520609

0.780101

[0.677, 0.884]

α ₁

-0.0381613

0.0134649

-0.0380738

[-0.064, -0.0109]

α ₂

0.0155423

0.0151579

0.0157556

[-0.014, 0.044]

α ₃

0.035133

0.0142763

0.0347205

[0.0064, 0.063]