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Table 1 Sample distribution according sex, age, diagnosis and psychotropic drugs prescribed, and risks factors for polypharmacy

From: Polypharmacy in psychiatric practice in the Canary Islands

  Number of cases Mean ± SD One Drug % Two Drugs % Three Drugs % Four Drugs % Five Drugs % Six Drugs % Seven Drugs % P Value Sd R β
Age           N.S. -0.005
<18 years 7 1.4 ± 0.8 71.4 14.3 14.3 x x x x 0.785  
18–25 years 93 1.5 ± 0.9 67.7 21.5 4.3 4.3 2.2 x x   
25–45 years 966 1.7 ± 0.9 55.3 30.3 8.9 4.0 0.8 0.5 0.1   
45–65 years 926 1.7 ± 1.0 56.7 26.3 11.2 3.5 1.6 0.4 0.2   
>65 years 655 1.5 ± 0.8 62.9 27.2 7.0 1.7 0.9 0.2 0.2   
Gender           0.012 -0.048
Male 892 1.7 ± 1.0 55.8 27.2 9.8 4.8 1.5 0.7 0.2   
Female 1,755 1.6 ± 0.9 59.3 28.1 8.8 2.5 1.0 0.2 0.1   
Diagnosis           <0.0005 -0.233
F0 68 1.7 ± 1.0 55.9 25.0 11.8 5.9 1.5 x x   
F1 167 1.8 ± 0.9 43.7 33.5 17.4 4.8 0.6 x x   
F2 113 2.9 ± 1.6 22.1 25.7 14.2 20.4 10.6 5.3 1.8   
F3 659 1.9 ± 1.0 43.2 34.7 15.0 4.2 2.0 0.5 0.3   
F4 1,344 1.4 ± 0.7 65.4 26.5 6.4 1.6 x 0.1 x   
F5 6 1.5 ± 0.5 50 50 x x x x x   
F6 10 2.8 ± 1.8 40 10 10 10 30 x x   
F7 10 2.0 ± 1.3 40 40 10 x 10 x x   
Insomnia 268 1.2 ± 0.4 85.1 14.9 x x x x x   
Total 2,647 1.6 ± 0.9 58.1 27.8 9.1 3.2 1.2 0.4 0.2   
  1. Sd R β :Standardized regression coefficient β