There are many possible explanations for the difference, including different models, grades, locations, and time periods.
The scientists ruled out several explanations for the difference, including the possibility that people with a family risk have adopted healthier lifestyles or take part in additional screening.
That's an assumption on AppleInsider's part, though, and some other variance could account for the difference, including the presence of a Retina Display on top-end models.
The team acknowledges other possible explanations for the difference, including that Earth was bombarded by material with a lower oxygen isotope ratio at some time after the impact.
Although negotiation is used as the reason for the difference in this model, there truly are many reasons that could cause the difference including illegal ones.
That figure is about 24.5 per 100,000 population in Britain, 22.6 in the U.S. Numerous factors account for the difference, including the diagnostic pattern.
There are several possible reasons for the difference, including use of an oddball design with shorter inter-trial interval by Bishop et al. [11].
Potential hypotheses for the difference include: differential diagnosis due to language and cultural differences and differences in environmental exposures.
Above retirement age, the difference included more severe disease and the involvement of both the patellofemoral and tibiofemoral joints.
