The phrase "a gap in prevalence" is correct and usable in written English.
It can be used to describe a disparity or difference in the occurrence or frequency of something within a specific context or population.
Example: "The study revealed a gap in prevalence between urban and rural areas regarding access to healthcare services."
Alternatives: "a disparity in occurrence" or "a difference in frequency".
However, a wider gap in prevalence between rural and urban areas could be observed in some age groups by 2006.
Our study thus suggested a tremendous gap in prevalence of AERD when compared with other ethnic populations.
Nevertheless, estimates of prevalence and their substantive conclusions of higher prevalence using FT versus LLN, with a widening gap in prevalence in older age groups, and sex differences when using FT but not LLN were similar to ours: confirming findings reported in the USA, 45 Europe, 51 Korea, 16 internationally, 12 and in recent literature reviews.
Furthermore, most of the studies have been carried out in developed countries [ 9], leaving a gap in knowledge about the prevalence and factors that may be associated with adherence to diabetic treatment in rural settings.
It is clear that the gap in prevalence of disability between rural and urban areas increased from 1987 to 2006, particularly in the early-retirement years (60 75).
The evidence was provided that a crude increase of 1.50% of disability rates from 1987 to 2006 was mainly due to that the dramatic ageing of population and the gap in prevalence of disability between rural and urban areas has widened, having important practical implications for China.
The gap in prevalence between FT and LLN increased in older age groups.
The unexpected finding, however, was the large gap in prevalence of health symptoms between the two groups.
During 1990 2007, the gender gap in prevalence of sedentary behaviour was four percentage points in the highly educated group compared to 12 percentage points among those with basic education (Table 2).
This review did not find any data examining the prevalence of IPV in orthopaedic fracture clinics and identified this as a gap in the literature.
