Table 1 Summary of the patient data, measurement results, and statistical comparisons

From: Relationship between the phenylephrine test and eyelid droop after aponeurotic repair with the use of an epinephrine-containing local anaesthetic

  P
  total Group A Group B Group A vs B
No. of eyelids/patients 66/40 26/16 40/24
No. of patients bilateral/unilateral 26/14 10/6 16/8 0.525a
Right/left 34/32 13/13 22/18 0.953a
Male/female 14/26 8/8 6/18 0.542a
Age (range), yrs 70.6±9.4 (47 to 87) 68.5±9.0 (54 to 87) 70.8±9.1 (47 to 87) 0.589b
Levator function (range), mm 13.8±4.5 (6.5 to 16) 13.2±4.5 (8.0 to 15.5) 13.9±4.6 (6.5 to 16) 0.835b
Volume of anaesthetics (range), mm 0.75±0.28 (0.6 to 1.6) 0.80±0.35 (0.6 to 1.5) 0.73±0.25 (0.7 to 1.6) 0.899b
Preoperative MRD-1 (range), mm 0.06±0.81 (−2.0 to 2.5) 0.09±1.17 (−1.5 to 2.5) 0.04±0.58 (−2.0 to 2.0) 0.669b
MRD-1 using phenylephrine eye drop 0.55±1.01 (−2.0 to 3.0) 1.22±1.21 (−0.5 to 3.0) 0.04±0.58 (−2.0 to 2.0) <0.001c
Intraoperative MRD-1 (range), mm 2.46±1.11 (2.0 to 4.5) 2.80±0.79 (2.0 to 4.5) 2.30±1.03 (2.0 to 4.0) 0.225b
Postoperative 3-month MRD-1 (range), mm 2.12±1.0 (0 to 4.5) 2.12±1.05 (0 to 4.5) 2.13±1.01 (0.5 to 4.0) 0.915b
ΔMRD-1 (range), mm 0.34±0.55 (0 to 2.0) 0.68±0.52 (0 to 2.0) 0.17±0.56 (0 to 1.5) 0.004c
P-value: intra vs post 3-month MRD-1 <0.001d <0.001d 0.045d
  1. Group A: positive phenylephrine response group (16 patients), Group B: negative phenylephrine response group (24 patients), MRD: margin reflex distance.
  2. The ΔMRD-1 was the difference between the 3-month postoperative MRD-1 value and the intraoperative value.
  3. aNo statistical significance using the X2 test.
  4. bNo statistical significance using the Mann–Whitney U test.
  5. cStatistical significance using the Mann–Whitney U test.
  6. dStatistical significance using the Wilcoxon signed-rank test.