Table 1 Practice characteristics and the distribution of outcomes at baseline

Practice characteristics (Regional registry data)

Type of practice

0.7605

   Solo

64%

67%

   Others

36%

33%

Ratio of doctors to patients (median (IQR))

1513 (1245-1768)

1503 (1078-1730)

0.1979

Proportion of practices with nurses

77%

70%

0.3227

Primary outcome measures (The Danish National Health Service Register)

Annual chronic disease check-ups per 100 patients affiliated with the practice N = 96/93 (median (IQR))

1.1 (0.4-2.4)

1.1 (0.3-2.3)

0.8372

Secondary outcome measures

Number of practices with less than 1% annual chronic disease check-ups N = 96/93 (The Danish National Health Service Register)

47%

47%

1.00

Spirometry test per 100 patients affiliated with the practice N = 96/93 (The Danish National Health Service Register) (median (IQR))

0.66 (0.2-1.1)

0.5 (0.1-1.0)

0.7156

Annual check-ups for Diabetes N = 9 6/93 (Questionnaires)

0.8185

   Yes – always

84%

87%

   Yes – sometimes

10%

8%

   No

5%

5%

Annual check-ups for COPD N = 96/93 (Questionnaires)

0.6900

   Yes – always

30%

30%

   Yes – sometimes

53%

48%

   No

17%

22%

Sign-up for the Sentinel Data Capture N = 96/93 (Regional registry data (DAK-E))

25%

22%

0.6085

ICPC diagnosis coding – Diabetes N = 96/93 (Questionnaires)

0.2391

   Yes – always

48%

40%

   Yes – sometimes

34%

32%

   No

17%

28%

ICPC diagnosis coding – COPD N = 96/93 (Questionnaires)

0.1311

   Yes – always

35%

26%

   Yes – sometimes

42%

39%

   No

23%

35%

Stratification – Diabetes N = 96/93 (Questionnaires)

0.3283

   Yes – always

14%

22%

   Yes – sometimes

36%

35%

   No

50%

43%

Stratification – COPD N = 96/93 (Questionnaires)

0.9324

   Yes – always

10%

11%

   Yes – sometimes

36%

33%

   No

53%

56%