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Table 5 Interrupted time series analysis of the effect of the over-the-counter drug policy on number of monthly outpatient visits for acute upper respiratory infections, dyspepsia, and migraine (High-income patients)

From: Deregulation of sale of over-the-counter drugs outside of pharmacies in the Republic of Korea: interrupted-time-series analysis of outpatient visits before and after the policy

  Acute upper respiratory infections Dyspepsia Migraine
  Estimation Standard error p-value Estimation Standard error p-value Estimation Standard error p-value
Trend −0.0003* 0.0001 <.0001 0.0102* 0.0006 <.0001 0.0053* 0.0004 <.0001
Intervention
 Yes 0.0014 0.0021 0.4997 −0.0083 0.0248 0.7362 0.001 0.0199 0.9614
 No Ref. - - Ref. - - Ref. - -
Trend after intervention 0.0004 0.0002 0.0824 −0.0078* 0.0027 0.0036 −0.0005 0.0023 0.8152
  1. *: p-value < 0.05; All covariates are adjusted