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Table 3 Regressions of four outcome variables (row 1) on assumed predictors (column 1)

From: Heart rate changes during electroconvulsive therapy

  Peak HR T rise TriseRUL T dec
Constant 91.541 (15.808)* 1.525 (1.771) −4.844 (2.250) 6.042 (11.994)
Age (yr) −0.193 (0.176) 0.084 (0.023)* 0.075 (0.022)* 0.039 (0.178)
Charge dose (mC) −0.015 (0.013) 0.002 (0.002) −0.003 (0.003) −0.014 (0.013)
Positioninga 0.402 (4.810) −9.630 (0.621)*   2.602 (5.376)
Baseline HR (bpm) 0.456 (0.101)* 0.068 (0.013)* 0.061 (0.014)*  
Stimulus duration (s)    1.273 (0.266)*  
Seizure duration (s) 0.396 (0.139)*    1.093 (0.139)*
Number 114 111 63 84
Adjusted R2 0.195 0.756 0.510 0.460
F 6.465 86.108 17.161 18.710
  1. Trise, time from the onset of stimulation until the heart rate rises above baseline level; Trise RUL, Trise in patients with right unilateral stimulation; Tdec, time to the steepest heart rate decline during and after the seizure. Cell values in predictor rows are B coefficients with standard errors in parentheses; *p values < 0.01. aRelative to RUL positioning.