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Table 3 Pre- and postoperative clinical parameters

From: Delayed facial nerve decompression for severe refractory cases of Bell’s palsy: a 25-year experience

Parameters

Total (n = 36)

Decompression, 21–60 days (n = 18) (Group I)

Decompression, 60–89 days (n = 11) (Group IIa)

Decompression, ≥ 90 days (n = 7) (Group IIb)

P value

Patients treated with preoperative steroids (no, %)

19 (52.8)

11 (61.1)

6 (54.5)

2 (28.6)

P = 0.4130

Preoperative EMG (no, %)

11 (30.6)

5 (27.8)

4 (36.4)

2 (28.6)

P = 0.8810

Preoperative ENoG (no, %)

13 (36.1)

7 (38.9)

4 (36.3)

2 (28.6)

P = 0.8900

Delay before surgery (Mean days, range)

63 (21–205)

38 (21–57)

68 (62–79)

127 (90–205)

 

Initial Facial Function (HB mean, ± SD)

5.7 ± 0.6

5.7 ± 0.6

5.6 ± 0.7

5.7 ± 0.5

P = 0.5200

Final Facial Function (HB mean, ± SD)

3.3 ± 0.9

3.2 ± 0.7

2.9 ± 1.0

4.0 ± 0.8

P = 0.0772

Simple Functional Gain (mean gain, ± SD)

2.4 ± 1.0

2.4 ± 1.0

2.8 ± 0.8

1.7 ± 1.1

#P = 0.0293

Weighted Functional Gain (mean gain, ± SD)

1.7 ± 0.9

1.7 ± 0.8

2.1 ± 1.0

1.0 ± 0.8

*P = 0.0314

Final HB score 3 or better (no, %)

22 (61.1)

11 (61.1)

9 (81.8)

2 (28.6)

**P = 0.049

Final HB score 2 or better (no, %)

6 (16.7)

3 (16.7)

3 (27.3)

0 (0)

P = 0.3531

  1. No number
  2. % percentage
  3. SD standard deviation
  4. HB House-Brackmann score
  5. #Statistical significance, simple functional gain between Group IIa (decompression 60–89 days) and Group IIb (≥ 90 days) in Mann-Whitney test (p = 0.0293)
  6. *Statistical significance, weighted functional gain between Group IIa (decompression 60–89 days) and Group IIb (≥ 90 days) in Mann-Whitney test (p = 0.0314)
  7. ** Statistical significance, final HB score 3 or better between Group IIa (decompression 60–89 days) and Group IIb (≥ 90 days) in Fisher exact test (p = 0.049)