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Table 6 Interrupted Time Series analysis of the use of Ciprofloxacin at the ward of Gastroenterology, Hospital A, from 2013 to 2015

From: The effect of antibiotic stewardship interventions with stakeholder involvement in hospital settings: a multicentre, cluster randomized controlled intervention study

  Estimate SE p-value
Ciprofloxacin DDD per 100 bed days Constant 10.291 1.283 0.000
AR −0.090 0.520 0.868
Pre-slope   −0.169 0.341 0.636
Difference between pre- and post-slope   −0.106 0.461 0.825
Level effect
 3 months   −4.254 1.905 0.061
 6 months   −4.360 1.956 0.061
 12 months   −4.571 2.343 0.092
 18 months   −4.783 2.975 0.152
  1. Use of Ciprofloxacin is measured as quarterly sales of Ciprofloxacin, adjusted for bed days