Furthermore, identifying directionality of effect was problematic in the majority of research reviewed.
However, filling out sick notes was not considered to be very problematic by a majority of the physicians in our previous study [ 4], which suggests that the inferior quality of certificates is not a consequence of a lack of knowledge, but instead has other causes, such as low demands for quality from the SIOs [ 6].
The adjustment may be problematic if the majority of the cases suffered from IBD i.e. before they started smoking.
In humans, cancer may be caused by genetics and environmental exposures; however, in the majority of instances the identification of the critical time window of exposure is problematic.
All of them will want to have access to basic commodities like electricity and, as the director general for Nigeria's national pension commission Chinelo Anohu-Amazu said, "they really won't care if that comes from sustainable energy or not, as long as they have it". Not less problematic, in a continent where the majority of the populations is made of farmers, is the issue of desertification.
Recruitment was not problematic, with the majority of eligible families consenting to participate in the intervention.
Comparisons with the existing literature on substance use in HR samples are problematic as the majority of studies did not report ethnicity or they dichotomised the categories e.g. white vs non-white (see Addington et al. [ 11]).
While the background issue might be problematic, the vast majority of infected animals will have a positive value above the background levels we are now experiencing.
IDC is a global problem, but is especially problematic in the calcareous soils of the Midwestern U.S., where the majority of U.S. soybeans are grown [ 3].
Financial, institutional, personal, and methodological issues are not problematic for the majority of respondents.
