Table 3 Logistic regression results with prescriptions of anti-asthma medication as outcome

Female gender

Male

1.79

1.22–2.41

< 0.001

2.00

1.45–2.75

< 0.001

2.15

1.51–3.05

< 0.001

Age

Continuous

0.98

0.91–1.05

0.551

0.98

0.91–1.05

0.547

0.96

0.89–1.05

0.370

Education

Continuous

0.98

0.92–1.05

0.615

0.97

0.90–1.05

0.442

Body mass index

Continuous

1.01

0.98–1.05

0.423

1.04

1.00–1.08

0.050

Asthma at T1

No asthma

2.60

1.67–4.05

< 0.001

2.48

1.52–4.03

< 0.001

2.49

1.50–4.13

< 0.001

Allergies at T1

No allergies

1.58

1.15–2.17

0.005

1.38

0.98–1.95

0.067

1.51

1.05–2.17

0.025

Smoking at T4

Never smoked

 Smoked daily before, but not now

1.47

0.99–2.18

0.054

1.15

0.73–1.83

0.540

 Smokes sometimes, but not daily

1.01

0.61–1.66

0.976

0.88

0.51–1.56

0.678

 Smokes daily

1.73

1.23–2.42

0.002

1.20

0.78–1.85

0.414

Cannabis use at T4

Never used cannabis

 Used cannabis before, but not last year

0.83

0.57–1.22

0.342

0.85

0.57–1.27

0.423

0.82

0.53–1.28

0.378

 Used cannabis last year

1.65

1.14–2.41

0.009

2.05

1.38–3.05

< 0.001

1.71

1.06–2.77

0.028