Comparison of case-crossover and case-control features for examining sleep deficit as a risk factor for animal related injuries to veterinarians, Minnesota
| Study type | Case definition | Exposure assessment | Control selection | Factors potentially evaluable |
|---|---|---|---|---|
| Case-crossover | Animal related injury in past year | Hours of sleep the night before the injury | Usual hours of sleep at night the month before the injury for the injured vets | Transient factors like hours of sleep |
| Case-control | Animal related injury in past year | Hours of sleep the month before the injury | Hours of sleep for a randomly selected month for uninjured vets | Transient factors like hours of sleep and fixed factors like age, gender, practice style, etc |