Table 2.

CNN Muscle and Clinical Measures for Recovered and Persisting Whiplash.

Measure	Recovered (n = 19)	Persisting (n = 20)	P-value
NPRS	1.7 ± 2.1	4.2 ± 2.5	< 0.001
NDI	6.9 ± 7.9	30.6 ± 15.2	< 0.001
Muscle Volume (ml)	37.9 ± 4.7	36.3 ± 5.3	0.154
MFI (%)	19.1 ± 3.9	21.2 ± 3.8	0.049

Recovery from whiplash was defined as an NDI ≤ 28 at 3 months post motor vehicle collision. NPRS = numerical pain rating scale, NDI = neck disability index. Metrics shown = average ± 1 standard deviation. Muscle volume and muscle fat infiltration (MFI) were corrected for age, gender, and body mass index. P-value based on one-tailed independent samples t-tests.