Baseline Neck Disability Index and Patient-Reported Outcomes Measurement Information System Physical Function Predict Postoperative Return to Normal in Cervical Spine Surgery

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Figure 1
Proportion of patients meeting NDI PASS shown as a function of preoperative NDI. Differences between these groups were statistically significant (P = 0.005). NDI, Neck Disability Index; PASS, patient acceptable symptom state.
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Figure 2
Proportion of patients attaining the normative means (≥50) for PROMIS PF shown as a function of preoperative PROMIS PF quintile. Differences between these groups were statistically significant (P = 0.035). PROMIS PF, Patient-Reported Outcomes Measurement Information System Physical Function.
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Figure 3
Proportion of patients attaining the normative means (≤50) for PROMIS PI shown as a function of preoperative PROMIS PI quintile. Differences between these groups were not statistically significant. PROMIS PI, Patient-Reported Outcomes Measurement Information System Pain Interference.

Table 1

Association between preoperative outcomes and postoperative clinical benefit.

Abbreviations: NDI, Neck Disability Index; PROMIS PF, Patient-Reported Outcomes Measurement Information System Physical Function; PROMIS PI, Patient-Reported Outcomes Measurement Information System Pain Interference.
Note: For Neck Disability Index, postoperative improvements reflect a decrease in score, as lower scores reflect lower disability.

Table 2

Association between preoperative diagnosis and outcome.

Abbreviations: NDI, Neck Disability Index; PASS, patient acceptable symptom state; PF, Physical Function; PI, Pain Interference; PROMIS, Patient-Reported Outcomes Measurement Information System.