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Table 2 Factors influencing a prescription of oseltamivir according to clinical guidelines in 351 patients with antiviral medication

From: Prescription of antiviral drugs during the 2009 influenza pandemic: an observational study using electronic medical files of general practitioners in the Netherlands

  Univariate analysis Adjusted multilevel analysis
Variable OR (95% CI) OR (95% CI) P-value
Age at prescription (continuous) 0.87 (0.83 to 0.91) 0.84 (0.80 to 0.90) <0.001
Age-squared 1.00 (1.00 to 1.00) 1.00 (1.00 to 1.00) <0.001
Number of contacts with GP in 2009      
 <6 ref - ref -  
 6 or more 3.00 (1.87 to 4.82) 2.19 (1.18 to 4.08) 0.014
Total number of prescriptions in 2009*      
 <8 ref - ref -  
8 or more 4.60 (2.80 to 7.57) 3.24 (1.63 to 6.42) 0.001
  1. GP = general practitioner; OR = odds ratio; CI = confidence interval.
  2. *Excluding oseltamivir prescriptions.