Table 7 Comparison of non-invasive mechanical ventilation time and hospitalization time between two groups of patients [d, M (P25, P75)].

From: A randomized controlled trial of graded exercise rehabilitation enhances diaphragm function and exercise tolerance in patients with AECOPD

Group

Example number

Noninvasive mechanical ventilation time

Length of hospital stay

Study group

34

7.50 (7.25, 9.50)

8.25 (7.55, 10.75)

Control group

34

9.00 (8.00, 10.50)

10.75 (9.50, 11.25)

Z value

 

− 2.280

− 2.139

P-value

 

0.041

0.034

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