Studies were heterogeneous regarding patients, interventions, outcome measurements and results.
The study sample was heterogeneous regarding trauma mechanisms and had a wide range in patient age.
Similarly, results were heterogeneous regarding the impact of organ replacement therapy on ICU mortality.
However, the literature is heterogeneous regarding the leading causes of AUS failure and appropriate surgical management.
Most of them are highly heterogeneous regarding their geological and petrophysical features that clearly distinguish them from sandstone reservoirs.
However the sample was more heterogeneous regarding age and cancer history and the FCCHL showed variability despite them being negatively skewed (Additional file 1: Figure S1).
While one cluster exclusively comprised Zambian strains, the other was more heterogeneous regarding the RABV origins and included strains from Tanzania, Mozambique and Zambia.
This group was also more heterogeneous regarding their characteristics and consisted of males and females, aged 67 to 75 years, with a height range of 167 to 175 cm and a weight range of 77 to 92 kg.
Second, the identified works are extremely heterogeneous regarding FAI diagnostic criteria, measured variables, and method of investigation (radiology or motion capture analysis), making it impossible to combine data in a reliable quantitative synthesis.
Even though a lot of studies conducted in different institutional settings point into the direction of unemployment scarring in early and later career, scars may be heterogeneous regarding different groups of workers (see e.g., Arulampalam [2000]; Gangl [2006]; Burgess et al. [2003]; Schmelzer [2011]; Schmillen and Umkehrer [2013]).
Owing to chance factors, the treatment and the waiting-list groups were, prior to treatment, homogenous in terms of demographic variables but heterogeneous regarding headache frequency, intensity and headache index as well as on their additional disabilities measured by the RPQ, SCL-90-R and SF-36.
