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Table 1 A purchase history of combination of losartan and diuretic (C09DA01) is presented as an example of stockpiling

From: From prescriptions to drug use periods - things to notice

Time from the first purchase in days

Time from the previous purchase in days

DDD purchased

Assumed refill length with 1.0 DDD per day dose in days

Units stockpiled during the current purchase in DDD

Cumulative units stockpiled from first purchase in DDD

0

0

98,00

98

  

84

84

98,00

98

14

14

187

103

98,00

98

−5

9

271

84

196,00

196

112

121

364

93

98,00

98

5

127

435

71

98,00

98

27

154

539

104

98,00

98

−6

148

679

140

98,00

98

−42

106

746

67

98,00

98

31

137

868

122

98,00

98

−24

113

967

99

98,00

98

−1

112

1078

111

98,00

98

−13

99

1149

71

98,00

98

27

126

1359

210

98,00

98

−112

14

1400

41

98,00

98

57

72

1514

114

98,00

98

−16

56

1675

161

98,00

98

−63

−7

1774

99

98,00

98

−1

−8

1879

105

98,00

98

−7

−15

1963

84

98,00

98

14

−1

2061

98

98,00

98

0

−1

2145

84

98,00

98

14

13

2271

126

98,00

98

−28

−15

2341

70

98,00

98

28

14

2439

98

98,00

98

0

14

2536

97

98,00

98

1

15

2649

113

98,00

98

−15

0

2747

98

98,00

98

0

0

  1. In this example, combination of losartan and diuretic is used on average 1.0 DDDs per day (i.e., 1 tablet per day).
  2. The purchase on day 271 created a stock that remained until the purchase on day 1,359. Otherwise this patient had quite a regular purchase pattern.