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Table 3 Linear regression model of best corrected visual acuity (BCVA) at 12 months on single variables (A); multiple linear regression model on all variables together in the model (B); final multiple linear regression model in backward with stepwise method (C)

From: Inverted internal limiting membrane-flap technique for large macular hole: a microperimetric study

Parametersa β se(β) p-value 95% CI
(A)
 Sex (female/male) − 0.32 0.18 0.09 − 0.70 to 0.05
 Lens Status (phakic/pseuphakic) 0.35 0.18 0.07 − 0.03 to 0.72
 Age 0.002 0.017 0.881 − 0.033 to 0.038
 AL (mm) 0.06 0.09 0.52 − 0.13 to 0.25
 MH size 0.001 0.001 0.087 − 0.0002 to 0.0027
 BCVA pre (Logmar) 0.72 0.24 0.01 0.23 to 1.22
 MS pre (dB) − 0.067 0.017 0.001 − 0.102 to − 0.032
 CMS pre (dB) − 0.06 0.02 0.01 − 0.10 to − 0.01
 BCEA 68% pre 0.081 0.021 0.001 0.037 to 0.124
 BCEA 95% pre 0.03 0.01 0.01 0.01 to 0.05
 BCEA 99% pre 0.014 0.005 0.016 0.003 to 0.025
(B)
 Sex (female/male) 0.07 0.16 0.67 − 0.28 to 0.42
 LensStatus (Phakic/pseudophakic) 0.05 0.15 0.73 − 0.27 to 0.38
 Age 0.004 0.011 0.69 − 0.019 to 0.003
 AL (mm) − 0.07 0.07 0.43 − 0.22 to 0.08
 MH size 0.002 0.001 0.038 0.0001 to 000044
 BCVA pre (Logmar) 0.26 0.27 0.35 0.335 to 0.862
 MS pre (dB) − 0.085 0.231 0.004 − 0.136 to 0.034
 CMS pre (dB) 0.05 0.03 0.12 − 0.01 to 0.11
 BCEA 68% pre 0.07 0.03 0.07 − 0.01 to 0.14
 BCEA 95% pre − 0.12 0.04 0.02 − 0.22 to 0.02
 BCEA 99% pre 0.06 0.02 0.03 0.01 to 0.11
(C)
 MH size 0.002 0.001 0.029 0.0002 to 0.0036
 MS pre (dB) − 0.056 0.013 0.001 − 0.084 to − 0.028
 BCEA 68% pre 0.05 0.03 0.10 0.01 to 0.11
 BCEA 95% pre − 0.11 0.04 0.01 − 0.20 to − 0.03
 BCEA 99% pre 0.06 0.02 0.01 0.02 to 0.11
  1. β coefficient, se(β) standard error of coefficient, AL axial length, MH macular hole, BCVA pre best corrected visual acuity preoperative, Logmar logarithm of minimum angle of resolution, MS pre retinal sensitivity preoperative, dB decibel, CMS pre central macular sensitivity preoperative, BCEA 68%, 95%, 99% bivariate contour ellipse area at 68%, 95%, and 99% of fixation points, respectively
  2. aAll variables included in the model were considered as continuous