a slight trendp = 0.072
For GLS, the spline fit indicated a U-shaped curve with a slight trend towards non-linearity (p = 0.072 unadjusted; p = 0.13 adjusted).
For GLS, the spline fit indicated a U-shaped curve with a slight trend towards non-linearity (p = 0.072 unadjusted; p = 0.13 adjusted).
However, the test for non-linearity did not reach statistical significance after adjustment.