Displaying 1 result from an estimated 1 matches for "adjtibx".
2011 Jul 19
2
Incorrect degrees of freedom for splines using GAMM4?
...everpmh, random= ~(1|id)
+(1|cogtest), data=global)
Output indicating that this spline should probably look linear:
> summary(global.gamm4$mer)
Random effects:
Groups Name Variance Std.Dev.
id (Intercept) 0.1823454 0.427019
cogtest (Intercept) 0.0025498 0.050496
Xr.1 s(adjtibx) 0.0000000 0.000000
Residual 0.7782969 0.882211
Xs(adjtibx)Fx1 -0.0387360 0.0215596 -1.797
Output getting a df for this spline of 0.20.
> summary(global.gamm4$gam)
Approximate significance of smooth terms:
edf Ref.df F p-value
s(adjtibx) 0.2009 0.2009 16.07...