Table 3.

Longitudinal relationships suggesting a need of further evaluation, as suggested by relationship between morphology at MRI1 and clinical status at the time of re‐evaluation (ie, MRI2) for factors showing significance prior to P‐value adjustment, suggesting a need for further evaluation

Imaging Findings at MRI1	Relationship to the Development of Clinical Signsa	Relationship to the Worsening of Clinical Signsa
Syringomyelia
Presence	P r = .02, P a = .318	P r = .004; P a = .073
Height	P r = .013, P a = .218	P r = .032; P a = .449
Grade	P r = .022, P a = .326	P r = .042; P a = .558
Length		P r = .022; P a = .330
Dorsal atlantoaxial band		P r = .041; P a = .492b
Atlantooccipital overlapping		P r = .015; P a = .195b

^a P‐values are reported as “P _r” for preadjustment values, and P _a for adjusted P‐values).

^bValues reflect relationship to increases in neck pain grade, specifically.