Preparation

Why?

• Most patients want to be resuscitated. (88%; (95% CI: 81% to 96%). ^a Information on chances of survival reduce the number of patients who want to be resuscitated ^c
• Neither physicians ^c nor clinical prediction rules ^a accurately predict which patients will survive in-hospital cardiac arrest using information available in the first 24 hours.
• Neither physicians nor family members are good at guessing elderly patients' wishes ^a

Elderly patients are less slightly likely to want CPR if family members predict this

Patient	Target Disorder and Reference Standard	Diagnostic Test	LR+ (95% CI)	Post-test Probability	LR- (95% CI)	Post-test Probability
healthy elderly a (pre-test probability: 88%)	desire resuscitation (patients' wishes)	family member's prediction	1.4 (0.8 to 2.5)	92%	0.18 (0.036 to 0.85)	60%