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Table 2 Univariate analysis

From: Differential contractile response of critically ill patients to neuromuscular electrical stimulation

  Responder Non-responder p value
Patients/stimulations (n) 8/702 13/1122  
Sex (m/f) 7/87.5% / 1/12.5% 9/69.2% / 4/30.8% 0.340
Age (years) 56.0 [36.5/71.0] 53.0 [47.0/70.0] 0.645
Weight (kg) 80.0 [70.0/92.5] 92.0 [75.0/109.0] 0.301
Height (m) 1.80 [1.77/1.83] 1.76 [1.70/1.80] 0.500
BMI (kg/m2) 26.5 [22.6/29.0] 27.8 [25.5/33.6] 0.210
Diagnosis responsible for ICU admission ARDS 2/25.0% 6/46.2% 0.118
Sepsis 0/0.0% 3/23.1%
Multiple trauma 4/50.0% 3/23.1%
Neurologic 2/25.0% 0/0.0%
Miscellaneous 0/0.0% 1/7.7%
SOFA at ICU admission 12.0 [9.5/13.5] 14 [12.0/16.0] 0.030
APACHE II at ICU admission 24.0 [17.0/27.0] 25.0 [23.0/29.0] 0.414
SAPS2 at ICU admission 43.0 [33.0/61.5] 61.0 [57.0/66.0] 0.089
GCS at ICU admission 5.5 [3.0/7.5] 3.0 [3.0/6.0] 0.456
Time until first awakening (days) 12.0 [7.5/15.5] 20.5 [10.0/42.0] 0.287
ICU length of stay (days) 28.0 [19.0/36.0] 39.0 [25.0/49.0] 0.185
Percent of days with RASS > − 3 during ICU stay 50.2 [26.9/94.6] 71.4 [50.0/79.2] 0.750
Noradrenalin (μg/kg min) 0.08 [0.03/0.10] 0.07 [0.06/0.11] 0.414
Time requiring noradrenalin (days) 12.0 [3.5/15.5] 12.0 [11.0/25.0] 0.595
Survivors/non-survivors 7/87.5% / 1/12.5% 11/84.6% / 2/15.4% 0.854
Non-excitable muscle membrane/excitable muscle membrane 2/33.3% / 4/66.7% 5/62.5% / 3/37.5% 0.280
Start of NMES treatment after ICU admission (days) 3.0 (2.0/6.0) 4.0 (2.0/6.0) 0.750
  1. Values for metric variables are presented as median and interquartile range and for categorical variables as count and percentages. Mann-Whitney U or chi-square test were used to calculate statistical significance. The statistically significant p-value (p < 0.05) is italicised to highlight it. BMI = Body Mass Index; SOFA = Sepsis-related Organ Failure Assessment; ICU = intensive care unit; APACHE II = Acute Physiology and Chronic Health Evaluation II; SAPS 2 = Simplified Acute Physiology Score 2; GCS = Glasgow Coma Scale; RASS = Richmond Aggitation Sedation Scale; NMES = Neurmuscular electrical stimulation