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Table 2 Parameter estimates, standard errors, and P-values of segmented regression models predicting weekly numbers of PPI prescriptions over time

From: Feasibility of a pharmacy-led intervention to de-implement non-guideline-concordant proton pump inhibitor use

Parameter

Coefficient

Standard error

t-statistic

P-value

General wards

    

 Intercept, β0

52.77

2.11

25.06

<0.0001

 Baseline trend, β1

0.11

0.09

1.10

0.273

 Level change after PPI intervention, β2

− 2.58

3.12

− 0.83

0.411

 Trend change after PPI intervention, β3

− 0.50

0.13

− 3.89

<0.0001

ICU

    

 Intercept, β0

6.58

0.65

9.96

<0.0001

 Baseline trend, β1

− 0.02

0.03

− 0.63

0.532

 Level change after PPI intervention, β2

− 0.29

1.04

− 0.28

0.783

 Trend change after PPI intervention, β3

− 0.02

0.04

− 0.52

0.606

  1. ICU intensive care unit, PPI proton pump inhibitor