an increasing trendp < 0.01
The overall proportion of treated with antibiotics for patients <5 years age ( p < 0.01), 18–49 years age ( p < 0.01), 50–64 years age ( p < 0.01) and ≥65 years age ( p < 0.01) in emergency departments showed an increasing trend over time, which was similar with he overall proportion of treated with antibiotics for all age group of patients in inpatient departments ( p < 0.01) ( Table 5 ).