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Table 1 Characteristics of subjects in 2007

From: Does long-term care insurance affect the length of stay in hospitals for the elderly in Korea?: a difference-in-difference method

 

Treatment group

Control group

Total

Level 1

Level 2

Level 3

Subtotal

Sex

      

Male

1,445 (23.5%)

1,165 (21.4%)

3,288 (24.2%)

5,993 (23.3%)

1,610,861 (41.5%)

1,616,854 (41.4%)

Female

4,700 (76.5%)

4,283 (78.6%)

10,319 (75.8%)

19,699 (76.7%)

2,266,895 (58.5%)

2,286,594 (58.6%)

Age (years, ±S.D.*)

76.96 (±7.42)

78.27 (±7.30)

77.13 (±7.02)

77.34 (±7.20)

71.31 (±5.84)

71.35 (±5.87)

NHI classification

      

Employee

4,215 (68.7%)

3,762 (69.1%)

9,356 (68.8%)

17,658 (68.8%)

2,565,730 (66.3%)

2,583,388 (66.3%)

Self- employed

1,925 (31.4 %)

1,682 (30.9%)

4,250 (31.2%)

8,024 (31.2%)

1,303,302 (33.7%)

1,311,326 (33.7%)

NHI premium (ten thousand KRW, ±S.D.*)

9.64 (±8.56)

9.10 (±7.79)

9.11 (±8.52)

9.23 (±8.36)

8.47 (±7.65)

8.48 (±7.66)

Residence

      

Large city

2,801 (45.6 %)

2,495 (45.8%)

6,008 (44.2%)

11,538 (44.9%)

1,740,988 (45.0%)

1,752,526 (45.0%)

Small city

2,768 (45.1%)

2,391 (43.9%)

5,944 (43.7%)

11,328 (44.1%)

1,683,043 (43.5%)

1,694,371 (43.5%)

Rural

571 (9.3%)

558 (10.3%)

1,654 (12.2%)

2,816 (11.0%)

445,001 (11.5%)

447,817 (11.5 %)

Number of physician visits (±S.D.*)

24.79 (±34.81)

26.92 (±37.62)

37.97 (±44.20)

32.37 (±41.16)

34.76 (±34.80)

34.74 (±34.85)

Number of chronic disease (±S.D.*)

2.26 (±1.56)

2.23 (±1.62)

2.31 (±1.57)

2.28 (±1.58)

1.49 (±1.34)

1.50 (±1.34)

Total

6,145 (100.0%)

5,448 (100.0%)

13,607 (100.0%)

25,692 (100.0%)

3,877,756 (100.0%)

3,903,448 (100.0%)

  1. *S.D.: standard deviation.
  2. Notes: Level 1, 2, 3 beneficiaries in 2007 was recalculated with people having the same level during 2008 ~ 2010.