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Table 4 Comparisons of baseline data and annual changes between persistently controlled patients and persistently uncontrolled patients during 5 years of follow-up

From: COPD Clinical Control: predictors and long-term follow-up of the CHAIN cohort

 

Baseline data

Annual changes (/year)

Characteristics

Persistently controlled

Persistently uncontrolled

Persistently controlled

Persistently uncontrolled

CAT score

9.6 (5.9)

15.5 (7.8)*

0.0 (− 1.0–1.7)

0.2 (− 2.5–3.0)

HDAS anxiety

10.7 (4.8)

11.1 (4.8)

0.0 (− 1.0–2.0)

0.3 (− 1.0–3.0)

HDAS depression

8.0 (4.6)

9.3 (4.9)*

0.5 (− 0.3–2.3)

0.0 (− 1.6–3.0)

FEV1, %pred

71.2 (20.8)

52.3 (19.9)*

0.3 (− 2.8–3.0)

− 0.2 (− 3.4–1.5)

  1. CAT COPD Assessment Test; HDAS Hospital Anxiety and Depression Scale; FEV1 forced expiratory volume in 1 s
  2. Data is presented as mean (SD) or median (5th–95th percentile)
  3. *Statistically significant differences between persistently uncontrolled and persistently controlled patients (p < 0.05)