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

Table 3

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

Parameter		SE
Intercept	9496.96	17.76	<0.001
Canton	66.67	1.26	<0.001
Sex = women	1522.96	38.87	<0.001
Sex = men	0	0
Sex = women × Canton	−1.74	2.87	0.544
Sex = men × Canton	0	0

This parameter was set to zero because it was redundant.