Table 1 Demographic and clinical variables of the different unplanned extubation (UE) groups.

From: Prognostic factors and outcomes of unplanned extubation

Item All patients (n = 295) Non-survivors (n = 45) Survivors (n = 250) p value
Age (years) 65.7 ± 16.1 (18~94) 68.0 ± 14.6 65.4 ± 16.3 0.317a
Female patients 96 (32.5%) 11 (24.4%) 85 (34.0%) 0.208
Body mass index 23.7 ± 4.5 (13.8~41.3) 24.0 ± 5.0 23.6 ± 4.4 0.591
APACHE II score 16.4 ± 8.7 (3~42) 22.9 ± 8.7 15.2 ± 8.1 <0.001
TISS 26.5 ± 9.1 (10~56) 30.3 ± 10.7 25.9 ± 8.6 0.015a
Glasgow Coma Scales 10.3 ± 4.1 (3~15) 9.4 ± 4.5 10.5 ± 4.0 0.129a
Intubation by pulmonary cause 112 (38.0%) 22 (48.9%) 90 (36.0%) 0.101
Time of MV before UE (h) 134.4 ± 158.9 (0~1231) 165.2 ± 239.7 128.8 ± 139.3 0.680a
Re-intubation within 48 h 136 (46.1%) 34 (75.6%) 102 (40.8%) <0.001
Medical origin 154 (52.2%) 32 (71.1%) 122 (48.8%) 0.004
Endotracheal intubation 278 (94.2%) 45 (100%) 233 (93.2%) 0.118
Self-extubation 189 (64.1%) 27 (60.0%) 162 (64.8%) 0.537
Co-morbidity 1.0 ± 1.0 1.4 ± 1.1 1.0 ± 1.0 0.009
 Coronary artery disease 71 (24.1%) 10 (22.2%) 61 (24.4%) 0.753
 COPD 42 (14.2%) 6 (13.3%) 36 (14.4%) 0.850
 Uremia 23 (7.8%) 12 (26.7%) 11 (4.4%) <0.001
 Liver cirrhosis 14 (4.7%) 9 (20.0%) 5 (2.0%) <0.001
 Diabetes 73 (24.7%) 16 (35.8%) 57 (22.8%) 0.068
 Stroke 93 (31.5%) 10 (22.8%) 83 (33.2%) 0.145
 Cancer 24 (8.1%) 8 (17.8%) 16 (6.4%) 0.017
  1. Expressed as mean ± SD (range) or n (%); APACHE II = Acute Physiology and Chronic Health Evaluation; TISS = Therapeutic Intervention Score System; COPD = chronic obstructive pulmonary disease. aThe Mann-Whiney U test was used owing to not being normally distributed.