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Table 1 Baseline demographic and clinical characteristics of HMV patients in Chile (n = 1105)

From: Results of the home mechanical ventilation national program among adults in Chile between 2008 and 2017

Characteristics
Female n (%) 572 (51.8)
Male n (%) 533 (48.2)
Median age Median [IQR] 59 (44–68)
BMI (n = 526) Median [IQR] 34.9 (26–46)
Residence
Urban (n) (%) n (%) 1088 (98.5)
Rural (n) (%) n (%) 17 (1.5)
State health insurance (according to monthly income in 2020)
Grupo A and B (450 USD) n (%) 942 (85.4)
Grupo C (> 450 y ≤ 657 USD) n (%) 82 (7.4)
Group D (> 657 USD) n (%) 79 (7.2)
Family APGAR (n = 435) Median [IQR] 10 (8–10)
Baseline overall SRI Score Median [IQR] 47 (35–62.1)
Comorbidities
Arterial hypertension n (%) 710 (64.5)
Diabetes n (%) 354 (32.2)
Initiation of ventilation   
Acute n (%) 263 (23.8)
Chronic n (%) 842 (76.2)
Transferred from the children's program n (%) 99 (8.9)
Patients with ≤ 90 days n (%) 74 (6.7)
Patients with > 90 days n (%) 1031 (93.3)
Diagnosis causing hypoventilation (Groups)
(1) COPD n (%) 388 (35)
(2) OHS   264 (23.9)
(3) NMD   180 (16.3)
(4) non-CF BC or TBC   92 (8.3)
(5) SCOLIOSIS   65 (5.9)
(6) ALS   58 (5.24)
(7) OTHER DIAGNOSES   58 (5.24)
Lung function (Spirometry) (n = 623)
FVC (L) Median [IQR] 1.53 (1.06–2.07)
FEV1 (L) Median [IQR] 0.88 (0.6–1.42)
FEV1/FVC (%) Median [IQR] 71 (51–84)
Arterial blood gas
paO2 (mmHg) Median [IQR] 62 (54–72)
paCO2 (mmHg) Median [IQR] 58.2 (52–65)
HCO3 (mmol/L) Median [IQR] 32 (28–35)
  1. HMV home mechanical ventilation, BMI body mass index, URBAN area with > 10,000 people, APGAR screening for family dysfunction, 7–10 suggests a highly functional family, SRI severe respiratory insufficiency score, COPD chronic obstructive pulmonary disease, OHS obesity hypoventilation syndrome, NMD neuromuscular disease, non-CF BC or TB non-cystic fibrosis bronchiectasis or tuberculosis, ALS amyotrophic lateral sclerosis, OTHER DIAGNOSES cystic fibrosis, pulmonary fibrosis, phrenic paralysis, posttransplant bronchiolitis, FVC forced vital capacity, FEV1 forced expiratory volume in 1 s