Table 3 Association between patient characteristics and reporting of adverse reaction (yes/no) from patients and physicians (multivariable multilevel logistic regression, yielding adjusted* odds ratios and 95% confidence intervals (CI))

Age (10 year increase)

0.82

0.82–0.90

1.00

0.90–1.10

 Female (vs. male)

1.96

1.76–2.17

2.39

1.87–3.15

 12/13 years

1.39

1.22–1.59

2.32

1.65–3.26

 10 years

1.26

1.12–1.42

1.17

0.87–1.59

 Other or no graduation

1.18

0.94–1.48

1.15

0.64–2.08

 College/university

1.16

1.04–1.29

1.03

0.79–1.33

 Technical school/college

1.15

1.01–1.31

0.57

0.41–0.79

 Other or no degree

0.90

0.77–1.05

0.98

0.68–1.41

 Unemployed or welfare-recipient

1.21

1.03–1.41

0.42

0.25–0.71

 Student or other

1.19

1.01–1.40

1.53

1.06–2.21

 Pensioner

1.05

0.91–1.21

0.66

0.46–0.96

 Multiperson household (vs. single person)

0.93

0.83–1.03

1.12

0.85–1.47

 Randomized (vs. non-randomized)

1.24

1.11–1.39

2.10

1.59–2.78

 Asthma/allergic rhinitis

1.03

0.91–1.16

0.97

0.70–1.33

 Low back pain

0.85

0.76–0.96

0.69

0.51–0.95

 Neck pain

1.01

0.91–1.12

1.09

0.83–1-41

 Dysmenorrhea

0.86

0.62–1.19

0.71

0.29–1.71

 Arthritis

0.85

0.67–1.07

0.40

0.21–0.76

 Spouse

1.00

0.90–1.13

0.90

0.67–1.20

 Child

1.14

0.83–1.57

0.61

0.25–1.50

 Voluntary insured (vs. mandatory)

0.93

0.85–1.02

0.83

0.65–1.05