Research Article

The Russians Are the Fastest in Marathon Cross-Country Skiing: The “Engadin Ski Marathon”

Table 4

Coefficients () and standard errors (SE) from multivariate regression models for age by sex and canton.

ParameterSE

Intercept40.290.08<0.001
Canton0.250.01<0.001
Sex = women−5.680.17<0.001
Sex = men00
Sex = women × Canton−0.020.010.094
Sex = men × Canton00

This parameter was set to zero because it was redundant.