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Table 1 Interrupted time-series analysis for originator molecules in the global core list, using pricing data from 1999 to 2014 with 2004 as the interruption in the series (P < 0,05)

From: Evaluating the impact of the single exit price policy on a basket of originator medicines in South Africa from 1999 to 2014 using a time series analysis

INN

 

Trend

(P value)

Change in level

(P value)

Change in slope

(P value)

Constant

(P value)

Int 1

% Change in level 2004

Salbutamol 2 mg/5mls Syr

1, Ventolin

0,018

0,000

−0,065

0,000

−0,014

0,000

0,19

0,000

0,28

−23,47

Glibenclamide 5 mg tab

2, Daonil

0,228

0,000

−0,771

0,001

−0,047

0,382

2,45

0,000

3,59

−21,51

Atenolol 50 mg caps

3, Tenormin

0,427

0,000

−1242

0,000

−0,209

0,007

2,56

0,000

4,70

−26,45

Captopril 25 mg tabs

4, Capotena

0,044

0,014

−0,117

0,071

0,016

0,365

2,09

0,000

2,31

−5,07

Simvastatin 20 mg tabs

5, Zocor

−0,997

0,001

− 1078

0,225

0,832

0,004

9,56

0,000

4,58

−23,54

Amitriptyline 25 mg tabs

6, Tryptanol

0,176

0,000

−0,397

0,000

−0,169

0,000

1,70

0,000

2,58

−15,42

Ciprofloxacin 500 mg tabs

7, Ciprobay

−1028

0,002

−5113

0,000

1560

0,000

18,21

0,000

13,07

−39,12

Co-Trimoxazole 8 + 40 mg/ml syr

8, Bactrim

0,364

0,000

−2267

0,000

−0,247

0,000

2,46

0,000

4,28

−52,94

Amoxicillin 500 mg caps

9, Amoxilb

0,334

0,000

−0,127

0,429

−0,274

0,001

3,52

0,000

5,19

−2,45

Ceftriaxone 1 g/vial inj

10, Rocephin

4302

0,081

−82,503

0,000

−3371

0,237

121,81

0,000

143,32

−57,57

Diazepam 5 mg

11, Valium

0,318

0,000

−0,772

0,000

−0,213

0,000

1,00

0,000

2,59

−29,83

Diclofenac 50 mg tabs

12, Voltaren

0,063

0,013

−0,209

0,025

0,021

0,373

1,16

0,000

1,48

−14,17

Paracetamol 25 mg/ml syr

13, Panado

0,001

0,702

−0,030

0,017

0,014

0,000

0,18

0,000

0,18

−16,57

Omeprazole 20 mg tabs

14, Losec

−0,610

0,036

1183

0,245

1298

0,000

11,58

0,000

8,53

13,87

  1. Withdrawn- a2009 b 2008
  2. Each item carries the® for trademark reference