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Table 2 Measurement frequencies for International Microdialysis Forum Tier 1 substances, by treatment phase

From: Cerebral metabolic effects of strict versus conventional glycaemic targets following severe traumatic brain injury

  Group Normala Stricta Total P valueb
Glucose (mmol/L) > 0.8 110 (6) 78 (42) 188 (50) 0.22
0.2–0.8 79 (41) 102 (54) 181 (48)
< 0.2 2 (1) 8 (4) 10 (3)
   191 188 379  
Lactate/pyruvate ratio < 25 83 (42) 116 (60) 199 (51) 0.32
25–40 101 (52) 67 (35) 168 (43)
> 40 12 (6) 9 (5) 21 (5)
   196 192 388  
Lactate (mmol/L) < 4 142 (73) 156 (81) 298 (77) 0.69
≥ 4 54 (28) 36 (19) 90 (23)
   196 192 388  
  1. a Cells are shown as number (percent) for single measurements
  2. b Probability of group effect between treatment phases by chi-square test for generalised estimating equation estimates, using a binomial distribution and logit link, clustered by patient