Table 2.

Incidence of PIH

	Total (n = 938)	Development cohort (n = 657)	Validation cohort (n = 281)	P value
PIH a	481 (51.3%)	339 (51.6%)	142 (50.5%)	0.765
Post-hoc analysis
MAP ≤ 65 mmHg	396 (42.2%)	278 (42.3%)	118 (42.0%)	0.927
Decrease in MAP > 30%	420 (44.8%)	292 (44.4%)	128 (45.6%)	0.755
PIH lasting for 1 min	420 (44.8%)	295 (44.9%)	125 (44.5%)	0.906

Data are presented as number (%)

^a Defined as an absolute MAP ≤ 65 mmHg or a relative decrease in MAP > 30% of baseline (MAP in the ward)

Abbreviations: PIH post-induction hypotension, MAP mean arterial pressure