Epidemiology and Biostats Mnemonics

Ep i d emi o l o g ya n dBi o s t a t sMn Mn emo ni c s Suicide risk factors SAD PERSONS: Sex: male Age: young, elderly Depression Previous suicide attempts Ethanol and other drugs R eality eality testing/ R ational ational thought (loss of) Social support lacking Organized suicide plan No spouse Sickness/ Stated future intent

Sensitivity and Specificity

seNsitivity of a test: related to the rate of false Negatives. sPecificity of a test: related to the rate of false Positives. · Alternatively ritten: seNsitive: No Non!Negatives. sPecific: Puny Psuedo!Positives.

Informed consent: requirements, exceptions  "#ign this DO $efore e can start": Discussion O $tain agreement agreement oercion!free · %xceptions to informed consent are !IPE: !aiver  Incompetent Privilege (therapeutic privilege) Emergency

"i## criteria for causa#ity " &lons Pursuing E pidemiology& ommonly $ehind %he Silly Samples": onsistency Plausi$ility Experimentation $iological gradient oherence %emporality Strength of association S pecificity

Primary: Predisposing factors decreased. Secondary: Severity decreased. %ertiary: %herapy, %raining.

Suicide risk factors in order of risk SOARS: · 'op  risk factors in order of highest to loest risk: Serious previous attempt Older than * Alcohol R age history Sex (male)

Re#ia&i#ity R andom Error  REduces RElia$ility ( RE produci$ility)

Error: type I 'a#p(a) vs* type II '&eta) %ype I (Alpha) Error: "%here Is An Effect" here in reality there is none.

i+arette smoke: maor carcino+ens PAN%: Polynuclear aromatic hydrocar$ons Aromatic amines Nitrosamines %ar  · Nicotine and ar$on monoxide are Non!arcinogenic.