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Table 3 Primary and secondary outcomes in subgroup with “uncomplicated” pneumothorax

From: Digital versus analogue chest drainage system in patients with primary spontaneous pneumothorax: a randomized controlled trial

VariableAnalogue
N = 44
Digital
N = 39
P-value
Total duration chest tube drainage (days)3 (2–5)1 (1–3)0.024*
LOS (days)3 (2–5)1 (1–5)0.014*
Number of chest x-ray during admission2 (1–3)1 (1–2)0.017*
Treatment failure (recurrence within one week) (n, %)3 (7%)2 (5%)>  0.999
Recurrence within 12 weeks follow-up (n, %) (excluding those with treatment failure)6 (16%)
(missing follow-up in n = 3)
2 (5%)0.262
  1. Data presented as median (IQR) or number of patients (%). LOS: length of stay. Statistical tests used: Mann Whitney test, Fisher’s exact test. Statistical significance indicated with an *