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Table 1 Distribution of patient characteristics by hospital admission

From: The effects of continuity of care on hospital utilization in patients with knee osteoarthritis: analysis of Nationwide insurance data

Unit: persons (%)

Category

Total

No

Yes

P-value †

N*

%

N*

%

N*

%

Total number of patients

311,949

(100.0)

306,581

(98.2)

5368

(1.8)

 

Gender

Male

130,621

(41.9)

129,002

(42.1)

1619

(30.2)

<  0.001

Female

181,328

(58.1)

177,579

(57.9)

3749

(69.8)

 

Age (yr)

≤29

69,212

(22.2)

68,928

(22.5)

284

(5.3)

<  0.001

30–39

30,770

(9.9)

30,529

(10.0)

241

(4.5)

 

40–49

45,951

(14.7)

45,326

(14.8)

625

(11.6)

 

50–59

64,555

(20.7)

63,058

(20.6)

1497

(27.9)

 

60–69

49,299

(15.8)

47,973

(15.6)

1326

(24.7)

 

70–79

52,162

(16.7)

50,767

(16.6)

1395

(26.0)

 

Payer type

NHI

298,290

(95.6)

293,263

(95.7)

5027

(93.6)

<  0.001

Medicaid

13,413

(4.3)

13,077

(4.3)

336

(6.3)

 

Others

246

(.1)

241

(.1)

5

(.1)

 

Charlson comorbidity score

0

103,063

(33.0)

102,573

(33.5)

490

(9.1)

<  0.001

1

47,059

(15.1)

46,472

(15.2)

587

(10.9)

 

2

62,858

(20.2)

61,636

(20.1)

1222

(22.8)

 

3+

98,969

(31.7)

95,900

(31.3)

3069

(57.2)

 

Frequency of hospitalization

0

306,581

(98.3)

306,581

(100.0)

0

(0.00)

<  0.001

1

4065

(1.3)

  

4065

(75.7)

 

2

846

(.2)

  

846

(15.8)

 

3+

457

(.1)

  

457

(8.5)

 

Outpatient visits

1

103,808

(33.3)

103,585

(33.8)

223

(4.2)

<  0.001

2–3

79,207

(25.4)

78,701

(25.7)

506

(9.4)

 

4–7

60,431

(19.4)

59,368

(19.4)

1063

(19.8)

 

8+

68,503

(22.0)

64,927

(21.2)

3576

(66.6)

 

Level of COC

0.76–1.00

78,012

(25.0)

77,519

(25.3)

493

(9.2)

<  0.001

0.51–0.75

57,320

(18.4)

54,668

(17.8)

2652

(49.4)

 

0.26–0.50

23,534

(7.5)

21,894

(7.2)

1640

(30.6)

 

0.00–0.25

1470

(.5)

1366

(.4)

104

(1.9)

 

Low (< 3 visits)

151,613

(48.6)

151,134

(49.3)

479

(8.9)

 

Hospital type

General hospital

16,730

(5.4)

15,920

(5.2)

810

(15.1)

<  0.001

Hospital

32,457

(10.4)

30,644

(10.0)

1813

(33.8)

 

Clinic

1588

(.5)

1454

(.5)

134

(2.5)

 

LTC

175,322

(56.2)

173,278

(56.5)

2044

(38.1)

 

Oriental hospital

1725

(.6)

1663

(.5)

62

(1.2)

 

Oriental clinic

84,127

(27.0)

83,622

(27.3)

505

(9.4)

 

Type of medicine

Oriental

85,852

(27.5)

85,285

(27.8)

567

(10.6)

<  0.011

Western

225,847

(72.5)

221,050

(72.2)

4797

(89.4)

 

Region

Urban

140,742

(45.1)

138,228

(45.1)

2514

(46.8)

<  0.011

Rural

171,207

(54.9)

168,353

(54.9)

2854

(53.2)

 

Ownership

Public

2282

(.7)

2216

(.7)

66

(1.2)

<  0.001

Corporate

25,316

(8.1)

24,197

(7.9)

1119

(20.8)

 

Private

284,351

(91.2)

280,168

(91.4)

4183

(77.9)

 

No. of beds

≤100

277,880

(89.1)

274,438

(89.5)

3442

(64.1)

<  0.001

101–300

23,383

(7.5)

22,030

(7.2)

1353

(25.2)

 

301–500

4099

(1.3)

3919

(1.3)

180

(3.4)

 

501–700

2614

(.8)

2477

(.8)

137

(2.6)

 

≥701

3973

(1.3)

3717

(1.2)

256

(4.8)

 
  1. *Patient with overlapping records tallied as one patient (overlapping not allowed). †P for trend: Chi-square
  2. Abbreviations: NHI national health insurance, COC continuity of care, LTC long-term care hospital