Table 1.

Conversion coefficients for total scores and axial components (the use of second‐order polynomial equations is only recommended for ambulatory populations). For example, mFARS = 14.59 + (SARA × 1.84), or mFARS(axial) = 22.20 + (SARA × 1.40) + (SARA² × −0.0066). The association between mFARS and FARSn is included for legacy comparison (see “Discussion” section).

	Score	Model	Linear model				Second‐order polynomial model
		Units	Points		Percentages		Percentages
		Predicted from	Inter.	Slope	Int.	Slope	Inter.	x	x 2
Total scores	mFARS	FARSn	−0.10	0.80	−0.10	1.07
	mFARS	SARA	14.57	1.84	15.67	0.79
	mFARS	ICARS	11.06	0.85	11.89	0.91
	SARA	mFARS	−5.84	0.51	−14.61	1.17
	SARA	ICARS	−1.27	0.45	−3.18	1.12
	ICARS	mFARS	−9.67	1.12	−9.67	1.04
	ICARS	SARA	4.51	2.15	4.51	0.86
Axial component	mFARS	SARA	14.19	1.22	39.41	0.61	22.20	1.40	−0.0066
	mFARS	ICARS	10.27	0.74	28.53	0.70	21.39	0.99	−0.0023
	SARA	mFARS	−8.49	0.71	−47.15	1.42	34.93	−1.28	0.0197
	SARA	ICARS	−2.48	0.58	−13.79	1.09	12.87	0.00	0.0087
	ICARS	mFARS	−10.27	1.22	−30.19	1.29	11.07	−0.06	0.0099
	ICARS	SARA	5.29	1.64	15.56	0.87	−1.97	1.68	−0.0068