Table 3.

Logistic regression analysis of the factors predicting the correct answer to each question with a statistical significance

Medications/factors	OR	95% CI	P value
Paracetamol
Original
Agea	0.995	0.978–1.012	0.003
Educationb	2.147	1.109–4.159	0.023
Generic 1
Educationb	2.778	1.433–5.387	0.002
Generic 2
Agea	0.969	0.950–0.989	0.003
Educationb	0.442	0.228–0.854	0.015
Paracetamol + codeine
Genderc	2.340	1.277–4.285	0.006
Educationb	4.186	2.244–7.807	<0.001
Mefenamic acid
Agea	0.979	0.963–0.995	0.009
Acetyl-salicylic acid
Agea	0.975	0.956–0.996	0.017
Educationb	0.403	0.202–0.804	0.010
Diclofenac sodium
Gender (male)	3.162	1.105–9.047	0.032
Educationb	0.316	0.111–0.905	0.032
Hyoscine-N-butylbromide
Agea	0.966	0.942–0.990	0.005
Genderc	2.351	1.056–5.238	0.036

CI confidence interval, OR odds ratio

^aOlder (>65 years) vs. younger (<65 years)

^bBetter educated (university graduates, postgraduates or PhD, and health scientists) vs. less educated (middle school graduates and high school graduates)

^cMales vs. females