10.6 Duration of MV
10.6.2 Metaregression duration of mechanical ventilation ~ mean duration of mechanical ven-
10.6.2 Metaregression duration of mechanical ventilation ~ mean duration of mechanical ven-
Mixed-Effects Model (k = 32; tau^2 estimator: DL)
logLik deviance AIC BIC AICc
-75.7878 47.7771 157.5757 161.9729 158.4328
tau^2 (estimated amount of residual heterogeneity): 2.0911 (SE = 1.1334) tau (square root of estimated tau^2 value): 1.4461
I^2 (residual heterogeneity / unaccounted variability): 57.23%
H^2 (unaccounted variability / sampling variability): 2.34 R^2 (amount of heterogeneity accounted for): 23.67%
Test for Residual Heterogeneity:
QE(df = 30) = 70.1429, p-val < .0001 Test of Moderators (coefficient 2):
QM(df = 1) = 7.3761, p-val = 0.0066 Model Results:
estimate se zval pval ci.lb ci.ub intrcpt 0.4504 0.8677 0.5191 0.6037 -1.2503 2.1512 slope -0.2634 0.0970 -2.7159 0.0066 -0.4534 -0.0733 **
---Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
Mean duration of mechanical ventilation
T reatment eff ect (mean diff erence)
0 10 20 30 40 50
−20 −15 −10 −5 0 5 10
Coutinho et al. 2016
Machado et al. 2017 França et al. 2017
Burtin et al. 2009 Eggmann et al. 2018 Fossat et al. 2018
Hickmann 2018
Kho et al. 2019 Gerovasili et al. 2009
Routsi et al. 2012 Abu−Khaber et al. 2013
Kho et al. 2015
Fischer et al. 2016 Shen et al. 2017
Kurtoglu et al. 2015 Acqua et al. 2017
Dos Santos et al. 2018 Shaolin et al. 2019
Chen S et al. 2011 Dong et al. 2014
Yosef−Brauner et al. 2014 Dong et al. 2016
Moss et al. 2016 Maffei et al. 2017 McWilliams et al. 2018
Winkelman et al. 2018 Schweickert et al. 2009Hodgson et al. 2016
Chen YH et al. 2012 Denehy et al. 2013
Kayambu et al. 2015
Amundadottir at al. 2019
Figure 83: Metaregression bubble plot: Hospital LOS vs Mean ICU LOS
10.6.2.1 Metaregression duration of mechanical ventilation ~ mean duration of mechanical ventilation adjusted for ICU mortality
Table 203: List of studies with mean duration of MV and ICU mortality
group trialname year MV_duration_mean ICU_mortality
Cycling Coutinho et al. 2016 11.93 0.32
Cycling Machado et al. 2017 21.94 0.2245
Cycling França et al. 2017 5.228 0.6842
Cycling Burtin et al. 2009 7.871 0.2
Cycling Eggmann et al. 2018 7.018 0.1652
Cycling Fossat et al. 2018 5.831 0.1827
Cycling Hickmann 2018 6.874 0.3158
Cycling Kho et al. 2019 10.39 0.2727
NMES Gerovasili et al. 2009 9 0.2245
NMES Routsi et al. 2012 20.79 0.3571
NMES Abu-Khaber et al. 2013 10.49 0.125
NMES Kho et al. 2015 17.88 0.1176
NMES Fischer et al. 2016 4.667 0.07407
NMES Shen et al. 2017 7.68 0.08
NMES Kurtoglu et al. 2015 17.03 0
NMES Acqua et al. 2017 7.56 0.24
NMES Dos Santos et al. 2018 12.38 0.4231
NMES Shaolin et al. 2019 6.218 NA
PPR Chen S et al. 2011 48.52 0.1026
PPR Dong et al. 2014 6.141 0
PPR Yosef-Brauner et al. 2014 14.55 0
PPR Dong et al. 2016 11 0.04717
PPR Moss et al. 2016 11.84 0.1333
PPR Maffei et al. 2017 0.8771 0
PPR McWilliams et al. 2018 11.16 0.1373
PPR Winkelman et al. 2018 11.72 0.09259
PPR Schweickert et al. 2009 5.514 0.2212
PPR Hodgson et al. 2016 7.014 0.06
PPR Chen YH et al. 2012 44.87 0.1111
PPR Denehy et al. 2013 4.722 0.08
PPR Kayambu et al. 2015 19.41 0.08
PPR Amundadottir at al. 2019 11 0.02
Table 204: List of studies by group
Cycling NMES PPR
8 10 14
Table 205: Descriptive statistics
parameter n mean sd p25 median p75 min max
ICU_mortality 31 0.16 0.15 0.08 0.12 0.22 0.00 0.68
MV_duration_mean 32 12.47 10.28 6.71 10.44 12.93 0.88 48.52
Mixed-Effects Model (k = 31; tau^2 estimator: DL)
logLik deviance AIC BIC AICc
-73.0607 43.9401 154.1213 159.8573 155.6598
tau^2 (estimated amount of residual heterogeneity): 1.7590 (SE = 1.0719) tau (square root of estimated tau^2 value): 1.3263
I^2 (residual heterogeneity / unaccounted variability): 51.40%
H^2 (unaccounted variability / sampling variability): 2.06 R^2 (amount of heterogeneity accounted for): 40.13%
Test for Residual Heterogeneity:
QE(df = 28) = 57.6111, p-val = 0.0008 Test of Moderators (coefficients 2:3):
QM(df = 2) = 10.3689, p-val = 0.0056 Model Results:
estimate se zval pval ci.lb ci.ub intrcpt 0.0201 0.9076 0.0222 0.9823 -1.7588 1.7990 MV_duration_mean -0.2819 0.0943 -2.9899 0.0028 -0.4667 -0.0971 **
ICU_mortality 4.2772 2.8979 1.4759 0.1400 -1.4026 9.9570 ---Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
10.6.2.2 Metaregression duration of mechanical ventilation ~ mean duration of mechanical ventilation (<15 days)
Table 206: List of studies with mean ICU LOS
group trialname year MV_duration_mean
Cycling Coutinho et al. 2016 11.93
Cycling França et al. 2017 5.228
Cycling Burtin et al. 2009 7.871
Cycling Eggmann et al. 2018 7.018
Cycling Fossat et al. 2018 5.831
Cycling Hickmann 2018 6.874
Cycling Kho et al. 2019 10.39
NMES Gerovasili et al. 2009 9
NMES Abu-Khaber et al. 2013 10.49
NMES Fischer et al. 2016 4.667
NMES Shen et al. 2017 7.68
NMES Acqua et al. 2017 7.56
NMES Dos Santos et al. 2018 12.38
NMES Shaolin et al. 2019 6.218
PPR Dong et al. 2014 6.141
PPR Yosef-Brauner et al. 2014 14.55
PPR Dong et al. 2016 11
PPR Moss et al. 2016 11.84
PPR Maffei et al. 2017 0.8771
PPR McWilliams et al. 2018 11.16
PPR Winkelman et al. 2018 11.72
PPR Schweickert et al. 2009 5.514
PPR Hodgson et al. 2016 7.014
PPR Denehy et al. 2013 4.722
PPR Amundadottir at al. 2019 11
Table 207: List of studies by group
Cycling NMES PPR
7 7 11
Table 208: Descriptive statistics: mean ICU LOS
n mean sd p25 median p75 min max
25 8.3 3.2 6.1 7.7 11 0.9 14.6
Mixed-Effects Model (k = 25; tau^2 estimator: DL)
logLik deviance AIC BIC AICc
-52.3121 41.3934 110.6241 114.2808 111.7670
tau^2 (estimated amount of residual heterogeneity): 2.1952 (SE = 1.1781) tau (square root of estimated tau^2 value): 1.4816
I^2 (residual heterogeneity / unaccounted variability): 63.95%
H^2 (unaccounted variability / sampling variability): 2.77 R^2 (amount of heterogeneity accounted for): 18.24%
Test for Residual Heterogeneity:
QE(df = 23) = 63.8071, p-val < .0001 Test of Moderators (coefficient 2):
QM(df = 1) = 5.1341, p-val = 0.0235 Model Results:
estimate se zval pval ci.lb ci.ub intrcpt 0.5970 1.0431 0.5723 0.5671 -1.4476 2.6415 MV_duration_mean -0.2877 0.1270 -2.2659 0.0235 -0.5366 -0.0388 * ---Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
Covariate MV_duration_mean
T reatment eff ect (mean diff erence)
2 4 6 8 10 12 14
−10 −5 0 5
Coutinho et al. 2016 França et al. 2017
Burtin et al. 2009 Eggmann et al. 2018 Fossat et al. 2018
Hickmann 2018
Kho et al. 2019 Gerovasili et al. 2009
Abu−Khaber et al. 2013 Fischer et al. 2016
Shen et al. 2017 Acqua et al. 2017
Dos Santos et al. 2018 Shaolin et al. 2019
Dong et al. 2014
Yosef−Brauner et al. 2014 Dong et al. 2016
Moss et al. 2016 Maffei et al. 2017
McWilliams et al. 2018
Winkelman et al. 2018 Schweickert et al. 2009
Hodgson et al. 2016
Denehy et al. 2013 Amundadottir at al. 2019
Figure 84: Metaregression bubble plot: duration of MV (<15 days)
10.6.2.3 Metaregression duration of mechanical ventilation ~ mean duration of mechanical ventilation (<15 days) adjusted for ICU mortality
Table 209: List of studies with mean duration of MV and ICU mortality
group trialname year MV_duration_mean ICU_mortality
Cycling Coutinho et al. 2016 11.93 0.32
Cycling França et al. 2017 5.228 0.6842
Cycling Burtin et al. 2009 7.871 0.2
Cycling Eggmann et al. 2018 7.018 0.1652
Cycling Fossat et al. 2018 5.831 0.1827
Cycling Hickmann 2018 6.874 0.3158
Cycling Kho et al. 2019 10.39 0.2727
NMES Gerovasili et al. 2009 9 0.2245
NMES Abu-Khaber et al. 2013 10.49 0.125
NMES Fischer et al. 2016 4.667 0.07407
NMES Shen et al. 2017 7.68 0.08
NMES Acqua et al. 2017 7.56 0.24
NMES Dos Santos et al. 2018 12.38 0.4231
NMES Shaolin et al. 2019 6.218 NA
PPR Dong et al. 2014 6.141 0
PPR Yosef-Brauner et al. 2014 14.55 0
PPR Dong et al. 2016 11 0.04717
PPR Moss et al. 2016 11.84 0.1333
PPR Maffei et al. 2017 0.8771 0
PPR McWilliams et al. 2018 11.16 0.1373
PPR Winkelman et al. 2018 11.72 0.09259
PPR Schweickert et al. 2009 5.514 0.2212
PPR Hodgson et al. 2016 7.014 0.06
PPR Denehy et al. 2013 4.722 0.08
PPR Amundadottir at al. 2019 11 0.02
Table 210: List of studies by group
Cycling NMES PPR
7 7 11
Table 211: Descriptive statistics
parameter n mean sd p25 median p75 min max
ICU_mortality 24 0.17 0.16 0.07 0.14 0.23 0.00 0.68
MV_duration_mean 25 8.35 3.20 6.14 7.68 11.00 0.88 14.55
Mixed-Effects Model (k = 24; tau^2 estimator: DL)
logLik deviance AIC BIC AICc
-49.2275 36.8416 106.4549 111.1671 108.5602
tau^2 (estimated amount of residual heterogeneity): 1.7784 (SE = 1.0801)