Table 3 Management and outcome indices hypothesis testing: (a) all patients with COPD; (b) all patients with very severe COPD

From: Trends in management and outcomes of COPD patients in primary care, 2000–2009: a retrospective cohort study

Index

Adjustment

Period

Period, age, sex, townsend

  

Coef (95% CI)

P-value

Coef (95% CI)

P-value

(a)

Mean age at diagnosis: linear, n=65,900

Annual change

−0.18 (−0.21, −0.15)

<0.01

−0.19 (−0.22, −0.16)

<0.01

 

Sex

0.21 (0.04, 0.38)

0.02

 

Townsend 1

1.00

 
 

Townsend 2

−0.49 (−0.78, −0.19)

 
 

Townsend 3

−1.64 (−1.92, −1.35)

 
 

Townsend 4

−2.23 (−2.50, −1.95)

 
 

Townsend 5

−3.74 (−4.03, −3.45)

 
 

Townsend missing

−1.80 (−2.23, −1.37)

<0.01

Mean age at death: linear, n=20,932

Annual change

0.08 (0.04, 0.11)

<0.01

0.07 (0.04, 0.1)

<0.01

 

Sex

0.56 (0.39, 0.73)

<0.01

 

Townsend 1 (Ref)

1.00

 
 

Townsend 2

−0.19 (−0.48, 0.11)

 
 

Townsend 3

−0.48 (−0.77, −0.19)

 
 

Townsend 4

−1.03 (−1.3, −0.75)

 
 

Townsend 5

−1.5 (−1.79, −1.21)

 
 

Townsend missing

0.22 (−0.22, 0.67)

<0.01

Proportion of patients with very severe COPD: odds ratio, n=52,311

Annual change

0.66 (0.62, 0.70)

<0.01

0.67 (0.64, 0.72)

<0.01

 

Age

0.99 (0.99, 1.00)

<0.01

 

Sex

0.52 (0.48, 0.55)

<0.01

 

Townsend 1 (Ref)

1.00

 
 

Townsend 2

0.97 (0.88, 1.08)

 
 

Townsend 3

1.01 (0.91, 1.11)

 
 

Townsend 4

1.09 (0.99, 1.20)

 
 

Townsend 5

1.10 (1.00, 1.22)

 
 

Townsend missing

0.99 (0.85, 1.17)

0.03

No. of oral corticosteroids: incident rate ratio, n=92,576

Annual change

1.05 (1.05, 1.05)

<0.01

1.05 (1.05, 1.05)a

<0.01

 

Age

1.01 (1.01, 1.01)

<0.01

 

Sex

1.21 (1.20, 1.23)

<0.01

 

Townsend 1 (Ref)

1.00

 
 

Townsend 2

1.03 (1.01, 1.06)

 
 

Townsend 3

1.07 (1.05, 1.10)

 
 

Townsend 4

1.12 (1.10, 1.15)

 
 

Townsend 5

1.20 (1.18, 1.23)

 
 

Townsend missing

1.08 (1.05, 1.12)

<0.01

No. of consultations: incident rate ratio, n=92,576

Annual change

1.03 (1.03, 1.03)

<0.01

1.03 (1.03, 1.03)b

<0.01

 

Age

1.01 (1.01, 1.01)

<0.01

 

Sex

1.08 (1.08, 1.08)

<0.01

 

Townsend 1 (Ref)

1.00

 
 

Townsend 2

0.99 (0.98, 1.00)

 
 

Townsend 3

1.03 (1.03, 1.04)

 
 

Townsend 4

1.01 (1.01, 1.02)

 
 

Townsend 5

1.01 (1.00, 1.01)

 
 

Townsend missing

1.09 (1.08, 1.10)

<0.01

(b)

Proportion of patients receiving triple therapy: incident rate ratio, n=6,456

Annual change

1.15 (1.14, 1.17)

<0.01

1.16 (1.14, 1.18)

0.00

 

Age

0.99 (0.99, 0.99)

0.00

 

Sex

0.94 (0.88, 1.01)

0.09

 

Townsend 1 (Ref)

1.04 (0.92, 1.16)

 
 

Townsend 2

1.06 (0.95, 1.19)

 
 

Townsend 3

1.07 (0.96, 1.19)

 
 

Townsend 4

1.03 (0.92, 1.15)

 
 

Townsend 5

0.98 (0.82, 1.17)

 
 

Townsend missing

1.16 (1.14, 1.18)

0.77

  1. Abbreviations: CI, confidence interval; Coef, coefficient; COPD, chronic obstructive pulmonary disease.
  2. a1.049 (1.047, 1.051) to 3 dp.
  3. b1.028 (1.028, 1.029) to 3 dp.