Table 1.

Estimation of the fixed effects of the mixed model with the three top countries (Norway or NOR, German or GER and Great Britain or GBR) with overall race time as dependent variable

Parameters	F	p
Intercept	35,386.32	<0.0001
Year	42.62	<0.0001
Sex	21.07	<0.0001
Country	11.73	<0.0001
Year × sex	4.57	0.011

Calendar year is rescaled using percentiles (Year = 1 is the period from 2006 to 2008, Year = 2 the period from 2009 to 2011, Year = 3 the period from 2012 to 2014). Sex Code = 1 is female, Sex Code = 2 is male