Table 1 Comparison of patients who underwent cervical disc surgery and a comparison group in relation to sociodemographic characteristics in Taiwan (N = 9750).

From: Increased Risk for Adhesive Capsulitis of the Shoulder following Cervical Disc Surgery

Variables

Patients who underwent cervical disc surgery N = 1625

Comparison patients N = 8125

p value

No.

%

No.

%

Age, mean (standard deviation) (years)

54.4 (13.1)

53.9 (13.9)

0.165

Male

939

57.8

4695

57.8

>0.999

Monthly insured income

    

0.001

≤NT$15,840

591

36.4

2965

36.5

 

NT$15,841~25,000

605

37.2

2685

33.1

 

≥NT$25,001

429

26.4

2475

30.5

 

Urbanization level

    

<0.001

1 (highest level)

495

30.5

2200

27.1

 

2

463

28.5

2605

32.1

 

3

238

14.6

1325

16.3

 

4

238

14.6

1265

15.5

 

5 (lowest level)

191

11.8

730

9.0

 

Geographic region

    

<0.001

Northern

830

51.2

3590

44.2

 

Central

423

26.0

2750

33.9

 

Southern

345

21.2

1620

19.9

 

Eastern

27

1.6

165

2.0

 
  1. The average exchange rate in 2013 was US$1 ≈ New Taiwan (NT)$31.