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Table 2 Sociodemographic characteristics of knee osteoarthritis and knee meniscal and ligament injury patients

From: Analysis of medical service use of knee osteoarthritis and knee meniscal and ligament injuries in Korea: a cross-sectional study of national patient sample data

Characteristics

Total

Inpatient

Outpatient

Knee OA

Knee meniscal and ligament injury

Knee OA

Knee meniscal and ligament injury

Knee OA

Knee meniscal and ligament injury

N = 48,321

%

N = 19,136

%

N = 3084

%

N = 2434

%

N = 48,000

%

N = 18,540

%

Age (years)

< 20

243

0.50

4290

22.42

1

0.03

272

11.18

242

0.50

4252

22.93

20~29

457

0.95

2665

13.93

11

0.36

411

16.89

450

0.94

2592

13.98

30~39

890

1.84

2488

13.00

38

1.23

359

14.75

877

1.83

2415

13.03

40~49

3812

7.89

3131

16.36

199

6.45

470

19.31

3758

7.83

3032

16.35

50~59

12,856

26.61

3542

18.51

772

25.03

539

22.14

12,736

26.53

3387

18.27

60~69

14,790

30.61

1865

9.75

960

31.13

251

10.31

14,729

30.69

1777

9.58

≥ 70

15,273

31.61

1155

6.04

1103

35.77

132

5.42

15,208

31.68

1085

5.85

Sex

Male

13,141

27.20

10,445

54.58

546

17.70

1438

59.08

13,054

27.20

10,171

54.86

Female

35,180

72.80

8691

45.42

2538

82.30

996

40.92

34,946

72.80

8369

45.14

Insurance typea

NHI

45,183

93.51

18,483

96.59

2853

92.51

2356

96.80

44,879

93.50

17,912

96.61

MD

3234

6.69

651

3.40

230

7.46

74

3.04

3215

6.70

625

3.37

VH

135

0.28

21

0.11

11

0.36

6

0.25

133

0.28

19

0.10

Medical institution typeb

Clinic

36,731

76.01

13,343

69.73

592

19.20

590

24.24

36,570

76.19

13,115

70.74

Hospital

12,925

26.75

4814

25.16

1816

58.88

1263

51.89

12,616

26.28

4452

24.01

GH

5371

11.12

2053

10.73

646

20.95

569

23.38

5251

10.94

1872

10.10

TH

1801

3.73

437

2.28

243

7.88

129

5.30

1774

3.70

408

2.20

LCH

621

1.29

85

0.44

176

5.71

25

1.03

457

0.95

65

0.35

PHC

407

0.84

21

0.11

2

0.06

–

–

407

0.85

21

0.11

KMH

126

0.26

59

0.31

80

2.59

34

1.40

50

0.10

26

0.14

Medical specialtyc

OS

43,654

90.34

17,056

89.13

2852

92.48

2304

94.66

43,379

90.37

16,486

88.92

AN

3108

6.43

300

1.57

32

1.04

11

0.45

3083

6.42

293

1.58

GS

2350

4.86

588

3.07

91

2.95

56

2.30

2281

4.75

554

2.99

NS

1957

4.05

493

2.58

76

2.46

27

1.11

1899

3.96

470

2.54

IM

1888

3.91

428

2.24

50

1.62

23

0.94

1846

3.85

410

2.21

RM

1532

3.17

354

1.85

166

5.38

53

2.18

1408

2.93

323

1.74

FM

1656

3.43

220

1.15

110

3.57

26

1.07

1563

3.26

195

1.05

RD

258

0.53

295

1.54

1

0.03

1

0.04

    

ER

101

0.21

451

2.36

1

0.03

4

0.16

    

GP

326

0.67

19

0.10

1

0.03

1

0.04

    

Otherd

470

0.97

93

0.49

        
  1. OA Osteoarthritis
  2. aNHI, National Health Insurance; MD, Medicaid; VH, Veteran Healthcare
  3. bGH, General Hospital; TH, Tertiary Hospital; LCH, Long-term Care Hospital; PHC, Public Health Center; KMH, Korean Medicine Hospital
  4. cOS, Orthopedic surgery; AN, Anesthesiology; GS, General Surgery; NS, Neurosurgery; IM, Internal Medicine; RM, Rehabilitation Medicine; FM, Family Medicine; RD, Radiology; EM, Emergency Medicine; GP, General Physician
  5. dIncluding Neurology, Thoracic and Cardiovascular Surgery, Pediatrics, Obstetrics and Gynecology, Urology, and Neuropsychiatry