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Table 4 Comparison of respiratory function tests and complaints at referral, between patients with and without an NIV indication at the first home ventilation service visit

From: The predictive value of respiratory function tests for non-invasive ventilation in amyotrophic lateral sclerosis

  No NIV indication yet (n = 35) NIV indication (n = 22)   
  N   N   Difference (SE) P-value
FVC 32 79 ± 21 20 70 ± 20 −9.9 ± 6 0.101
PCF 24 348 ± 137 16 259 ± 92 −88.4 ± 39 0.019
MIP 28 59 ± 36 19 50 ± 26 −8.9 ± 9 0.338
MEP 29 46 ± 23 18 44 ± 21 −1.9 ± 7 0.774
SNIP 15 40 ± 18 5 28 ± 9 −12 ± 12 0.089
Complaints 35 51% 22 77%   0.051
  1. Data are presented as mean ± SD or proportion. These data are collected at the Radboudumc at the time of referral to the HVS. The NIV indication was made at the first visit at the HVS. Median time between referral and the first visit at the HVS was 5.6 weeks (range 4.4–7.0). HVS Home Ventilation Services, NIV Non-invasive ventilation, FVC Forced Vital Capacity (% predicted value), PCF Peak Cough Flow (L/min.), MIP and MEP Maximum Inspiratory and Expiratory Pressure (% predicted value), SNIP Sniff Nasal Inspiratory Pressure (% predicted value)