Adolescent Adult 1 Aged 1 Aged, 80 and over 1 Cross-Sectional Studies 1 Emergency Medical Services 1 Female 1 Humans 1 Male 1 Middle Aged 1 Stroke 1 Time Factors 1 Time-to-Treatment 1 United States 1 Young Adult 1 adolescent 1 adult 1 aged 1 cerebrovascular accident 1 cross-sectional study 1 emergency health service 1 emergency medical services 1 female hospitals 1 human 1 information system 1 male 1 middle aged 1 patients 1 time factor 1