The estimated number of abortions per 100 live births in a given year. Accuracy can be used as comprehensive term for sensitivity and specificity together. Referring to health - recent onset, sometimes loosely used to mean severe eg. Used about the duration of a health problem it refers to a duration less than 4 weeks.
Age is a variable for which adjustment is most often carried out.
Witnessing of signatures and attestations about character are further examples. Any undesirable or unwanted consequence of a preventive, diagnostic or appropriate or inappropriate treatment. A consultation or a home visit conducted after the normal working hours as defined for that practice. Must be clearly stated when it is used in studies. The list of all patients in a practice by age and sex.