Table 2 Population demographics and descriptive summary of data

Beneficiaries, monthly mean ± SD

3,878,295 ± 80,558

4,013,070 ± 75,172

4,074,566 ± 47,546

4,050,415 ± 52,953

Men, %

46.1

46.6

46.9

47.1

Women, %

53.9

53.4

53.1

52.9

Age, mean ± SD

60.11 ± 12.93

60.72 ± 12.98

61.30 ± 12.95

61.95 ± 12.86

Medical Aid beneficiaries, %

8.03

8.12

7.96

7.73

Total healthcare costs, monthly mean ± SD (billion KRW)

681.80 ± 74.15

844.85 ± 53.19

924.49 ± 47.72

952.44 ± 54.81

Total copayments, monthly mean ± SD (billion KRW)

51.13 ± 2.71

55.07 ± 2.93

54.49 ± 2.43

50.50 ± 2.13

Total drug costs, outpatients, monthly mean ± SD (billion KRW)

290.28 ± 15.16

312.74 ± 15.97

327.62 ± 7.56

292.91 ± 8.55

Costs of antidiabetics, outpatients, monthly mean ± SD (billion KRW)

32.77 ± 1.78

35.30 ± 1.68

36.89 ± 0.86

35.75 ± 1.55

 Costs in price reduced group

24.21 ± 1.01

25.28 ± 1.25

24.82 ± 0.97

18.44 ± 0.79

 Costs in price constant group

8.56 ± 1.02

10.02 ± 0.57

12.07 ± 1.24

17.31 ± 1.85

DDDs of antidiabetics, monthly mean ± SD (million)

83.56 ± 4.22

88.53 ± 4.34

93.39 ± 2.15

97.12 ± 2.64

 DDDs in price reduced group

71.75 ± 2.94

74.16 ± 3.56

75.39 ± 1.42

72.38 ± 2.25

 DDDs in price constant group

11.81 ± 1.70

14.37 ± 0.86

18.00 ± 1.70

24.74 ± 2.27

Number of prescriptions with antidiabetics, monthly mean ± SD

1,520,685 ± 58,707

1,632,339 ± 57,761

1,762,863 ± 56,913

1,935,612 ± 58,314

 Number of prescriptions in price reduced group

1,174,390 ± 34,270

1,226,601 ± 41,480

1,286,483 ± 22,929

1,316,360 ± 25,313

 Number of prescriptions in price constant group

346,295 ± 27,689

405,739 ± 17,125

476,380 ± 36,017

619,221 ± 48,936