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Table 1 Demographic factors in NS and BES groups

From: Intraoperative Brief Electrical Stimulation of the Spinal Accessory Nerve (BEST SPIN) for prevention of shoulder dysfunction after oncologic neck dissection: a double-blinded, randomized controlled trial

Variable

Entire cohort

NS

BES

P-value

Number

54

27

27

–

Age

57.8

57.9

57.8

0.557

Gender

 Males

44 (81.5%)

21 (38.9%)

23 (42.6%)

0.555

 Females

11 (20.4%)

6 (11.1%)

5 (9.3%)

TNM stage

 Early

9 (16.7%)

5 (9.3%)

4 (7.4%)

0.352

 Advanced

46 (85.2%)

22 (40.7%)

24 (44.4%)

Tumor site

 Oral cavity

18 (33.3%)

10 (18.5%)

8 (14.8%)

0.231

 Oropharynx

13 (24.1%)

7 (13.0%)

6 (11.1%)

0.532

 Larynx

12 (22.2%)

7 (13.0%)

5 (9.3%)

0.323

 Other

12 (22.2%)

7 (13.0%)

5 (9.3%)

0.323

Charlson Comorbidity Index

1.57

1.43

1.63

0.754

Smoking (Pack-years)

17.3

16.4

19.7

0.522

BMI (kg)

3.73

4.68

2.98

0.713

Radiotherapy

42 (77.8%)

22 (40.7%)

20 (37.0%)

0.372

Chemotherapy

15 (27.8%)

5 (9.3%)

10 (18.5%)

0.112

  1. NS no stimulation, BES brief electrical stimulation, BMI body mass index