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Table 1 Characteristics of the study and control groups

From: Can preoperative results predict the need for future reintervention following injection laryngoplasty for unilateral vocal fold paralysis?

  

Study group

(n = 18)

Control group

(n = 33)

Test result

Sex

Women

10 (55.6)

22 (66.7)

χ2 =  0.62; p = 0.433

Men

8 (44.4)

11 (33.3)

Age

Range

40–85

29–78

U =  234.5; p = 0.218

M (SD)

60.5 (12.4)

55.3 (13.5)

Duration of paralysis (years)

Range

0.5–23

0.5–33

U = 231.5; p = 0.191

M (SD)

4.3 (6.3)

3.9 (5.8)

Paralysed VF

Right

7 (38.9)

13 (39.4)

χ2 = 0.01; p = 0.972

Left

11 (61.1)

20 (60.6)

Augmented VF

Right

4 (22.2)

11 (33.3)

χ2 =  0.71; p = 0.702

Left

8 (44.4)

13 (39.4)

Both

6 (33.4)

9 (27.3)

Injected material (to a paralysed VF)

CaHA

7 (38.9)

8 (24.2)

χ2 =  1.23; p = 0.541

HA

9 (50.0)

21 (63.6)

CaHA & HA

2 (11.1)

4 (12.1)

Amount of injected material (in all)

Range

0.4–1.8

0.94 (0.36)

U = 2 50.5; p = 0.897

M (SD)

0.4–2.1

0.97 (0.41)

Rehabilitation before augmentation

Yes

14 (77.8)

24 (72.7)

χ2 =   0.16; p = 0.692

No

4 (22.2)

9 (27.3)

Rehabilitation after augmentation

Yes

9 (50.0)

19 (57.6)

χ2 =  0.27; p = 0.603

No

9 (50.0)

14 (42.4)

  1. M mean, SD standard deviation, U result of Mann–Whitney test, p p-value, χ2 result of chi-square statistic test