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Table 3 Data on adverse outcomes and adverse events by intervention group in the followed hospitalised patients

From: Safety and efficacy of inspiratory muscle training for preventing adverse outcomes in patients at risk of prolonged hospitalisation

  IMT group (N = 31) Sham IMT group (N = 34) p value RR (CI 95%) NNT
Hospital LOS (days) [mean ± SD] 35.3 ± 2.7 41.8 ± 3.5 < 0.01 - -
Patients intubated [n (%)] 4 (15.3) 12 (42.8) 0.03 0.36 (0.27–0.97) 3.64
Hospital mortality [n (%)] 2 (6.4) 10 (29.4) 0.04 0.23 (0.2–0.94) 8.60
Muscle weakness [n (%)] 2 (7.7) 6 (21.4) 0.02 0.36 (0.19–0.98) 7.28
Adverse eventsa [n (%)] 21 (1.6) 22 (1.6) 0.84 1.11 (0.39–3.22) -
Cephalalgia 6 (0.5) 7 (0.5) - - -
Dyspnoea 6 (0.5) 6 (0.4) - - -
Pain 5 (0.3) 4 (0.3) - - -
Hypertension 4 (0.2) 3 (0.2) - - -
Dizziness 1 (0.1) 2 (0.2) - - -
  1. CI confidence interval, IMT group inspiratory muscle training group, Sham IMT group sham inspiratory muscle training group, LOS length of stay, RR relative risk, NNT number needed to treat, SD standard deviation
  2. a2655 interventions: 1285 for the inspiratory muscle training group and 1370 for the
  3. sham inspiratory muscle training group