Lifetime prevalence of mental health problems

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Epidemiology

Measures of occurrence

Incidence measures Base rate Incidence density (aka Incidence rate) Hazard rate Cumulative incidence Prevalence measures Lifetime prevalence Point prevalence Period prevalence

Measures of association

Relative measures Risk ratio Rate ratio Odds ratio Hazard ratio Absolute measures Risk/rate/incidence difference Attributable risk Attributable risk in exposed Percent attributable risk Levin’s attributable risk

Other measures

Mortality rate and Morbidity Case fatality Sensitivity (tests) Specificity (tests) Survival analysis

By mental health disorder

Anxiety Depression OCD Panic disorder Personality disorder Psychosis Schizophrenia Category:Mental health epidemiology

Lifetime prevalence (LTP) is the number of individuals in a statistical population that at some point in their life (up to the time of assessment) have experienced a "case" (e.g., a disorder), compared to the total number of individuals (i.e. it is expressed as a ratio or percentage). Often, a 12-month prevalence (or some other type of "period prevalence") is used in conjunction with lifetime prevalence.

References

• Ronald C. Kessler, PhD; Patricia Berglund, MBA; Olga Demler, MA, MS; Robert Jin, MA; Kathleen R. Merikangas, PhD; Ellen E. Walters, MS (2005) Lifetime Prevalence and Age-of-Onset Distributions of DSM-IV Disorders in the National Comorbidity Survey Replication. Arch Gen Psychiatry,62,6:593-602. Full text