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Table 2 Univariate and multivariable analyses of heart rate

From: Dexmedetomidine attenuates the positive chronotropic effects of intravenous atropine in patients with bradycardia during spinal anaesthesia: a retrospective study

  Univariate analysis Multivariable analysis
B 95% CI p value B 95% CI p value
Post 5
 D used − 6.284 − 9.969 to − 2.599 0.001 − 7.160 − 12.626 to − 1.694 0.011
 P concentration − 2.526 − 5.960 to 0.909 0.148 − 4.011 − 8.870 to 0.848 0.104
 Age 0.051 − 0.020 to 0.122 0.155 − 0.006 − 0.098 to 0.086 0.900
 Level 0.329 − 0.397 to 1.056 0.368 0.486 − 0.238 to 1.210 0.184
Post 30
 D used − 5.731 − 9.938 to − 1.525 0.008 − 7.487 − 14.128 to − 0.846 0.028
 P concentration − 3.314 − 7.265 to 0.637 0.099 − 5.033 − 10.950 to 0.885 0.094
 Age − 0.016 − 0.095 to 0.064 0.697 − 0.120 − 0.232 to − 0.008 0.037
 Level 0.111 − 0.790 to 1.013 0.805 0.122 − 0.757 to 1.001 0.782
Post 60
 D used − 8.611 − 12.152 to − 5.069 < 0.001 − 10.205 − 15.787 to − 4.624 0.001
 P concentration − 5.491 − 8.750 to − 2.232 0.001 − 6.149 − 10.952 to − 1.346 0.013
 Age 0.010 − 0.061 to 0.082 0.772 − 0.030 − 0.121 to 0.061 0.507
 Level 0.067 − 0.723 to 0.857 0.865 0.169 − 0.561 to 0.900 0.643
  1. B partial regression coefficient, CI confidence interval, D dexmedetomidine, P concentration propofol concentration (μg/ml), Level sensory block level