Table 4 Patient and GP characteristics associated with ⩾1 spirometry test performed in Norwegian general practice in 2011 among patients diagnosed with COPD or asthma during 2009–2011

From: GP utilisation by education level among adults with COPD or asthma: a cross-sectional register-based study

 

COPD a 40–59 years

Asthma 40–59 years

COPD a ⩾60 years

Asthma ⩾60 years

 

OR

95% CI

OR

95% CI

OR

95% CI

OR

95% CI

Education level

 High (reference)

1

 

1

 

1

 

1

 

 Intermediate

1.07

0.94–1.23

1.03

0.97–1.09

1.00

0.91–1.09

1.04

0.96–1.12

 Low

1.05

0.91–1.21

1.05

0.97–1–13

0.95

0.87–1.04

0.99

0.90–1.08

Male patient

1.09*

1.01–1.18

1.04

0.99–1.10

1.10***

1.05–1.15

1.05

0.99–1.11

Patient age (years)

1.00

0.99–1.01

1.00

1.00–1.01

0.97***

0.97–0.98

0.98***

0.98–0.98

Spirometry rate in the practice b

 Lowest quartile

1

 

1

 

1

 

1

 

 Medium–low

1.99***

1.65–2.42

2.24***

1.93–2.60

2.31***

2.02–2.66

2.03***

1.72–1.39

 Medium–high

3.33***

2.76–4.03

3.28***

2.84–3.79

3.69***

3.23–4.22

3.50***

2.98–4.11

 Highest quartile

6.51***

5.38–7.88

7.43***

6.39–8.63

7.96***

6.91–9.16

8.79***

7.46–10.37

GP characteristics

 GP male

1.14*

1.02–1.27

1.08

0.99–1.19

1.11*

1.03–1.20

1.15**

1.04–1.27

 GP age

1.00

0.99–1.00

1.00

0.99–1.00

1.00

0.99–1.00

0.995*

0.990–1.00

 GP approved specialist in FM

1.03

0.91–1.17

1.05

0.95–1.16

0.99

0.89–1.10

1.02

0.90–1.16

 GP list size (per 100)

1.01

1.00–1.03

1.03***

1.01–1.04

0.99**

1.01–1.03

1.04***

1.02–1.06

N

13,325

 

47,166

 

50,818

 

39,182

 
  1. Logistic regression models by diagnosis and age group.
  2. Abbreviations: COPD, chronic obstructive pulmonary disease; FM, familiy medicine; GP, general practitioner; OR, odds ratio.
  3. a Patients with both COPD and asthma diagnoses are included in the COPD group.
  4. b The rate of spirometry use in the total (group) practice the patient belongs to, divided in quartiles.
  5. *P<0.05, **P<0.01, ***P<0.001.
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