TY  - GEN
AU  - Suissa,S
TI  - Inhaled steroids and mortality in COPD: bias from unaccounted immortal time
SN  - 0903-1936
PY  - 2004///0617
KW  - Administration, Inhalation
KW  - Aerosols
KW  - Aged
KW  - Bias
KW  - Bronchodilator Agents
KW  - administration & dosage
KW  - Cohort Studies
KW  - Databases, Factual
KW  - Female
KW  - Glucocorticoids
KW  - Humans
KW  - Male
KW  - Observation
KW  - Proportional Hazards Models
KW  - Pulmonary Disease, Chronic Obstructive
KW  - drug therapy
KW  - Research Design
KW  - Time Factors
N1  - Publication Type: Journal Article; Research Support, Non-U.S. Gov't
UR  - https://doi.org/10.1183/09031936.04.00062504
ER  -