Table 1 Descriptive baseline characteristics of included patients from VENTILAGROUP.,
Variable | 1998 N = 522 | 2004 N = 267 | 2010 N = 524 | 2016 N = 535 |
|---|---|---|---|---|
Age, mean (SD), years | 67 (10) | 68 (11) | 69 (11) | 70 (11) |
Sex, n (%) | ||||
Male | 341 (66) | 169 (63) | 347 (66) | 339 (63) |
Female | 175 (34) | 98 (37) | 177 (34) | 196 (36) |
Geographical area, n (%) | ||||
Africa | 34 (6.5) | 21 (8) | 30 (5.7) | 26 (5) |
Asia | N/A | 3 (1.1) | 98 (18.7) | 171 (32) |
Australia & New Zealand | N/A | N/A | 27 (5) | 3 (1) |
Europe | 288 (55) | 117 (44) | 196 (37) | 201 (38) |
South America | 74 (14) | 49 (18) | 88 (17) | 118 (22) |
USA & Canada | 126 (24) | 77 (29) | 85 (16) | 16 (3) |
SAPS-II, mean (SD), points | 40.83 (15) | 40.80 (14) | 42.43 (15.5) | 41.06 (16) |
Initial ventilatory support, n (%) | ||||
Successful NPPV | 63 (12) | 78 (29) | 188 (36) | 213 (40) |
Failure NPPV | 22 (4) | 27 (10) | 59 (11) | 59 (11) |
Invasive mechanical Ventilation | 437 (84) | 162 (61) | 277 (53) | 263 (49) |
Body mass index, mean (SD), kg/m2 | – | 28 (8) | 28.5 (10) | 26 (8) |
Arterial blood gas values at ICU admission | ||||
pH, mean (SD) | 7.38 (0.10) | 7.33 (0.11) | 7.30 (0.12) | 7.33 (0.12) |
PaCO2, median [p25, p75], mmHg | 53 [43–59] | 56 [45–70] | 60 [47–76] | 53 [44–67] |
Ratio PaO2/FiO2, median [p25, p75] | 200 [156–249] | 194 [149–280] | 194 [140.5–262] | 190 [131–284] |
GNI, n (%) | ||||
Low income | 35 (7) | 22 (8) | 56 (11) | 62 (11) |
Low-medium income | 63 (12) | 40 (15) | 120 (23) | 250 (47) |
High income | 424 (81) | 205 (77) | 348 (66) | 223 (42) |