Primary angioplasty and selection bias inpatients presenting late (>12 h) after onset of chest pain and ST elevation myocardial infarction

Abstract

Patients receiving early invasive therapy had lower risk features on presentation. Selection bias may play an important role in choosing these patients' course of treatment and their subsequent outcomes. Certain patients presenting with AMI and duration of chest pain >12 h may benefit from early invasive therapy. These patients could be characterized in a randomized trial.

Some Methods of Propensity‐Score Matching had Superior Performance to Others: Results of an Empirical Investigation and Monte Carlo simulations

“…At each phase of the matching process, a greedy approach is employed: an untreated subject is selected for matching to a given treated subject even if this untreated subject would better serve as a match for another treated subject. This method has been used frequently in the medical literature (Aronow et al, 2003;Srinivasan et al, 2003;Vikram et al, 2003;Elad et al, 2002;Sabik et al, 2002), despite its performance never having been rigorously examined.…”

Propensity scores in intensive care and anaesthesiology literature: a systematic review

“…Treated and untreated subjects that remain unmatched are then discarded. This method has been used frequently in the medical literature [16][17][18][19][20], despite the fact that its performance has never been rigorously examined.…”

Invasive reperfusion after 12 hours of the symptom onset remains beneficial in patients with ST-segment elevation myocardial infarction: Evidence from a meta-analysis of published data

“…The remaining 21 studies were full-text reviewed, and 4 studies were excluded due to event rates not reported and outcomes of interest not reported. Finally, 18 studies [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] met the inclusion criteria and were included in the meta-analysis.…”