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Table 2 Pre- and post-PR CAT item and total scores, mean difference and effect sizes of CAT item and total scores

From: Contribution of individual COPD assessment test (CAT) items to CAT total score and effects of pulmonary rehabilitation on CAT scores

 

Pre-PR

Post-PR

Difference

Effect size r

Cough

3.0 (2.0–3.0)

2.0 (1.0–3.0)*

0.0 (− 1.0–0.0)

− 0.254

Phlegm

2.0 (1.0–3.0)

2.0 (1.0–3.0)*

0.0 (− 1.0–0.0)

−0.283

Chest tightness

1.0 (0.0–2.0)

1.0 (0.0–2.0)*

0.0 (− 1.0–0.0)

− 0.106

Breathlessness

4.0 (4.0–5.0)

4.0 (3.0–5.0)*

0.0 (− 1.0–0.0)

−0.354

Limited activities

3.0 (2.0–4.0)

3.0 (2.0–4.0)*

0.0 (− 1.0–0.0)

− 0.210

Confidence leaving home

2.0 (1.0–3.0)

2.0 (1.0–3.0)*

0.0 (− 1.0–0.0)

−0.244

Sleeplessness

3.0 (1.0–4.0)

2.0 (1.0–4.0)*

0.0 (− 1.0–1.0)

− 0.198

Energy

4.0 (3.0–4.0)

3.0 (2.0–4.0)*

− 1.0 (− 2.0–0.0)

− 0.403

Total score

22.0 (17.5–26.0)

19.0 (14.0–23.0)*

− 3.0 (− 7.0–1.0)

−0.435

  1. N = 381; * compared with Pre-PR scores, p ≤ 0.001