While reported symptoms are frequent in the PEP literature, there are no randomized studies examining this issue.
Longitudinal studies examining the relationship between pet-ownership or frequent contact with animals, and health, well-being or loneliness are rare.
Studies examining adolescents were more frequently in a position to influence students' health-related fitness knowledge (87.5%) than studies examining children (75%), and studies with low methodological quality (88.8%) had more frequent positive effects than studies with moderate quality (75%).
The results of recent observational studies examining the effectiveness of infliximab indicate that increased or more frequent dosing (i.e., beyond what is mentioned in the product labeling) may provide additional benefits for patients with rheumatoid arthritis [ 13, 14].
There is increasing evidence that the frequent exacerbator represents an independent phenotype (18), but despite indication of familial aggregation (14), studies examining genetic determinants of exacerbation frequency remain limited.
Previous studies examining loci involved in insecticide resistance concluded that resistant alleles are undergoing frequent expansion across the complex through hybridization between Cx. pipiens members [ 46, 47].
Although excess adiposity but not excess body weight is the real culprit of obesity-associated complications, the studies examining the effect of obesity-associated health risks in which adiposity is actually measured are less frequent than desired (4).
Studies examining this possibility are currently underway.
Few studies examined the effect of regular or frequent Khat chewing on blood pressure at the population level.
Those eight studies examined four facilities.
