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Table 2 Drug prices for which we can calculate the correlation between the usage rate of generic drugs and monthly personal incomes

From: Promoting generic drug usage in Japan: correlation between generic drug usage and monthly personal income

Item

Drug prices (all)

Drug prices (significantly correlated) (Japanese yen)

  

Total

Negative correlation

Positive correlation

Outpatient out-of-hospital

Number

634

227

195

32

Mean ± SD*

91.1 ± 253.5

91.3 ± 160.1

91.4 ± 150.2

90.6 ± 210.4

Median (min–max)

27.5 (0.1–3476.9)

40.6 (0.7–1139.2)

43.5 (0.7–945.1)

16.7 (0.7–1139.2)

Outpatient in-hospital

Number

432

109

98

11

Mean ± SD*

73.5 ± 212.7

66.7 ± 109.3

71.1 ± 113.8

28.1 ± 36.7

Median (min–max)

24.1 (0.1–2825.7)

33.8 (0.1–620.7)

37.2 (0.7–620.7)

9.6 (0.1–104.0)

Inpatient

    

Number

256

22

9

13

Mean ± SD*

62.5 ± 136.4

75.3 ± 234.4

13.8 ± 9.2

117.8 ± 297.5

Median (min–max)

17.1 (0.1–1139.2)

12.5 (0.7–1139.2)

13.0 (0.7–31.7)

11.9 (5.6–1139.2)

  1. *Standard deviation