This is a non-formatted dataset that is used in a vignette to illustrate how obtaining a well-formatted dataset
with the help of the view.errors.umbrella() function.
df.trainThe dataset contains the following variables:
| comment | comments on studies. |
| risk_factor | name of the intervention studied. |
| author_study | first study author of the individual studies. |
| year_publication_study | year of publication of the individual studies. |
| type_of_effect_size | type of effect size. |
| number_of_cases_exposed | number of cases in the exposed group. |
| number_of_cases_non_exposed | number of cases in the non-exposed group. |
| number_of_controls_exposed | number of controls in the exposed group. |
| number_of_controls_non_exposed | number of controls in the non-exposed group. |
| number_of_participants_exposed | total number of participants in the exposed group. |
| number_of_participants_non_exposed | total number of participants in the non-exposed group. |
| number_of_cases | number of cases. |
| number_of_controls | number of controls. |
| effect_size_value | value of the effect size |
| low_bound_ci | lower bound of the 95% confidence interval. |
| up_bound_ci | upper bound of the 95% confidence interval. |
| time_disease_free | total person-time at risk (sum of the person-time at risk in |
| the exposed and non-exposed groups). | |
| mean_of_intervention_group | mean of the intervention group |
| mean_of_control_group | mean of the control group |
| sd_of_intervention_group | sd of the intervention group |
| sd_of_control_group | sd of the control group |