Table 1

Inclusion criteria

Incidence of DVT during air flight
Design
Any design other than case report
Population
Any individuals who have travelled by air regardless of sex, age or risk status
Exposure
Air travel (short or prolonged flight)
Comparator
Not required
Outcomes
Asymptomatic or symptomatic VTE confirmed by clinical or diagnostic methods, or related mortality


Air flight as a risk factor for DVT
Design
Any comparative study design i.e. randomised controlled trial, prospective or retrospective cohort study or case control study.
Population
Any individuals who have travelled by air regardless of sex, age or risk status.
Exposure
Air travel (short or prolonged flight)
Comparator
No air travel
Outcomes
Asymptomatic or symptomatic VTE confirmed by clinical or diagnostic methods, pulmonary embolus (PE) or related mortality up to month after exposure

Adi et al. BMC Cardiovascular Disorders 2004 4:7   doi:10.1186/1471-2261-4-7