Table 2.

Results from the structural equation models^a

	Associations between rheumatoid arthritis status and estimated cardiorespiratory fitness	Unstandardized coefficient (95 % confidence interval)	Standardized coefficient	P-value
Model 1	Direct effect	-1.7 (-2.8, -0.6)	-0.089	0.002
Model 2a	Direct effect	-0.9 (-2.0, 0.3)	-0.045	0.14
	Indirect effect via physical symptoms	-0.8 (-1.3, -0.3)	-0.042	0.002
	Total effect	-1.7 (-2.8, -0.6)	-0.087	0.003
Model 2b	Direct effect	-0.8 (-2.0, 0.4)	-0.041	0.20
	Indirect effect through negative emotions	-0.9 (-1.5, -0.4)	-0.048	0.002
	Total effect	-1.7 (-2.8, -0.6)	-0.089	0.002
Model 3	Direct pathway	-0.5 (-1.3, 0.0)	-0.024	0.46
	Indirect effect through physical symptoms	-0.7 (-1.3, 0.0)	-0.034	0.051
	Indirect effect through negative emotions	-0.6 (-1.3, 0.0)	-0.034	0.039
	Total effect	-1.8 (-2.8, -0.7)	-0.092	0.001

^aModel 1: The effect of rheumatoid arthritis status on estimated cardiorespiratory fitness. Model 2a: The effect of rheumatoid arthritis status on estimated cardiorespiratory fitness, directly and indirectly through physical symptoms. Model 2b: The effect of rheumatoid arthritis status on estimated cardiorespiratory fitness, directly and indirectly through negative emotions. Model 3: The effect of rheumatoid arthritis status on estimated cardiorespiratory fitness, directly and indirectly through physical symptoms and negative emotions. All models were adjusted for age and sex