For most studies, study-specific HRs were within 10% of the pooled estimate, although there was heterogeneity by some studies for the HRs of sex-ratio within BMI 25.0-29.9 kg/m (I = 95.5%, P <0.05, Additional file 1: Table S3).
Conflict of interest was not reported in most studies, study design was partially explained or open to biases, in some studies methods of participant selection was unclear, allocation concealment and blinding was unclear or quality criteria not met, data collection methods were partially explained, and some studies used partially appropriate analysis methods.
Moreover, as in most published studies, studying thawed plasma allowed to study all marker dosages simultaneously in the same experiment, limiting the inter-individual variability.
Men were predominant studied group in most studies, whereas one study enrolled exclusively women [ 21].
18 19 Like the present study, most of these studies follow a time-series design, but study settings vary substantially.
Most studies (93%) reported study statistical values (e.g., F or t values).
Our study, like most studies on entrepreneurial intention, is not without limitations.
Most studies conclude that more studies need to be conducted [2].
Most studies lacked standard study names, did not publish their methods, and provided no publicly available data.
Furthermore, clear details regarding missing data were not provided by most studies, besides for one study (Strakowski et al. 2008).
