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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Otolaryngol Head Neck Surg. 2017 Jul 11;157(5):760–766. doi: 10.1177/0194599817717674

Table 2.

Correlation of Preoperative VA and Time to Surgery with Postoperative Gain in VA.

Variable Correlation with VA Improvement, R (P Value)
Preoperative VA 0.38125 (<.0001)a
Time to surgery −0.3142 (<.0001)b

Abbreviation: VA, visual acuity.

a

Pearson correlation used given the linear relationship of interval data.

b

Spearman correlation used given the nonlinear relationship of interval data.