HCUP's Nationwide databases can be used to identify, track, and analyze national trends in healthcare utilization, access, charges, quality, and outcomes.

National (Nationwide) Inpatient Sample (NIS)

• NIS Database Documentation

Kids’ Inpatient Database (KID)

• KID Database Documentation

Nationwide Ambulatory Surgery Sample (NASS)

• NASS Database Documentation

Nationwide Emergency Department Sample (NEDS)

• NEDS Database Documentation

Nationwide Readmissions Database (NRD)

• NRD Database Documentation

HCUP's State-specific databases can be used to investigate State-specific and multi-State trends in healthcare utilization, access, charges, quality, and outcomes.

State Inpatient Databases (SID)

• SID Database Documentation

State Ambulatory Surgery and Services Databases (SASD)

• SASD Database Documentation

State Emergency Department Databases (SEDD)

• SEDD Database Documentation