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MEASURING MENTAL ILLNESS

MEASURING MENTAL ILLNESS. EPIDEMIOLOGY. STUDY OF RATES OF DISORDER IN COMMUNITY POPULATIONS FOCUS ON GROUP RATES OF DISORDER NOT INDIVIDUAL CASES FOCUS ON UNTREATED CASES. WHY WANT EPIDEMIOLOGY?. SMALL PROPORTION OF PEOPLE WITH M.I. ENTER TREATMENT TREATED PEOPLE AREN’T REPRESENTATIVE

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MEASURING MENTAL ILLNESS

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  1. MEASURING MENTAL ILLNESS

  2. EPIDEMIOLOGY • STUDY OF RATES OF DISORDER IN COMMUNITY POPULATIONS • FOCUS ON GROUP RATESOF DISORDER NOT INDIVIDUAL CASES • FOCUS ON UNTREATED CASES

  3. WHY WANT EPIDEMIOLOGY? • SMALL PROPORTION OF PEOPLE WITH M.I. ENTER TREATMENT • TREATED PEOPLE AREN’T REPRESENTATIVE • MUST LOOK AT UNTREATED TO UNDERSTAND CAUSES, COURSE, AND TREATMENT

  4. GOALS • 1. SEE HOW WIDESPREAD M.I. IS • 2. LOOK AT UNMET NEED FOR SERVICES • 3. EXAMINE GROUP DIFFERENCES IN RATES • 4. BETTER WAY TO DISCOVER CAUSES AND COURSE OF M.I.

  5. HOW MEASURE M.I.? • PSYCHIATRIC INTERVIEWS VERY EXPENSIVE AND IMPRACTICAL • USE STANDARDIZED INSTRUMENTS • STANDARD QUESTIONS • STANDARD ANSWERS

  6. TWO TYPES OF MEASURES • GENERAL MEASURES OF OUTCOME • DIAGNOSTIC MEASURES OF OUTCOME

  7. GENERAL MEASURES • MOST COMMON • FREQUENTLY OCCURING SYMPTOMS – NOT COMPARABLE TO DSM CATEGORY • E.G. CESD

  8. CES-D - QUESTIONS DURING THE PAST WEEK • I FELT SAD • I DID NOT FEEL LIKE EATING; MY APPETITE WAS POOR • MY SLEEP WAS RESTLESS • I ENJOYED LIFE (REVERSED) • 20 IN ALL

  9. ANSWER CATEGORIES • NONE OR RARELY (LESS THAN 1 DAY); SOME (1-2 DAYS); MODERATE (3-4 DAYS); OFTEN (> 4 DAYS) • 0, 1, 2, 3 SCORES

  10. SCORES • ADD RESPONSES • 16 NORMAL CUTOFF FOR CES-D

  11. ISSUES • WHAT DOES IT MEASURE – DISORDER OR DISTRESS? • HIGH RATES – 20% TO 30% OVER 16 • SENSITIVE TO IMMEDIATE EVENTS • MUCH CHANGE – ONLY 1/3 OF PEOPLE STAY IN SAME CATEGORY OVER SEVERAL MONTHS • CAN’T SEPARATE DISORDER FROM DISTRESS

  12. USE FOR RATES COMPARE GROUPS IN COMMUNITY - E.G. GENDER, SOCIAL CLASS, MARITAL STATUS, ETC.

  13. DIAGNOSTIC STUDIES

  14. COMPARABLE TO DSM • CAN’T TELL WHAT CESD MEASURES • WANT SPECIFIC MEASURES OF DIAGNOSTIC CATEGORIES

  15. TWO MAJOR STUDIES • ECA - EPIDEMIOLOGIC CATCHMENT AREA) - 1980’S (WAKEFIELD) • NCS - NATIONAL COMORBIDITY STUDY - 1990’S (KESSLER) • BOTH USE FORMAL DIAGNOSES

  16. FINDINGS • MENTAL ILLNESS WIDESPREAD • DEPRESSION - 10% IN PAST YEAR; 25% OVER LIFETIME • ANXIETY - 20% IN PAST YEAR; 30% OVER LIFETIME • SUBSTANCE ABUSE - 15% PAST YEAR; 25% OVER LIFETIME

  17. FINDINGS • ALL DISORDERS - 1/3 OF POPULATION HAS DISORDER IN PAST YEAR; 1/2 OVER LIFETIME • MANY PEOPLE “COMORBID” - MORE THAN ONE DISORDER • MANY GROUP DIFFERENCES - CLASS, ETHNIC, GENDER, AGE, ETC.

  18. USUAL CONCLUSIONS (KESSLER) • MENTAL DISORDER WIDESPREAD • TREMENDOUS “UNMET NEED” FOR TREATMENT • UNMET NEED GREATEST AMONG POOR, MINORITIES, MEN, OLDER • MUST EXPAND MENTAL HEALTH SERVICES

  19. OVERESTIMATES (WAKEFIELD) • SUPPOSED TO BE SAME AS CLINICAL • 1. DISCRETION OF INDIVIDUAL • 2. DISCRETION OF CLINICIAN • COMMUNITY STUDIES • NO DISCRETION OF EITHER • NO CONTEXT (LIKE CESD) • RESULT IS OVERCOUNTING

  20. DSM SYMPTOMS • LACK INTEREST IN SEX • ANXIETY ABOUT PERFORMANCE • AROUSAL DIFFICULTIES • UNABLE TO HAVE ORGASM • CLIMAX TOO QUICKLY • FIND SEX PAINFUL • SEX NOT PLEASURABLE

  21. FINDINGS • 43 % OF WOMEN AND 31% OF MEN HAVE SEXUAL DYSFUNCTION • VERY WIDESPREAD PUBLIC HEALTH PROBLEM • PEOPLE MUST KNOW THAT MEDICATIONSARE AVAILABLE TO HELP

  22. SEXUAL DYSFUNCTION • BEST PREDICTOR? • LOW SATISFACTION WITH PARTNER • PEOPLE WHO DON’T ENJOY SEX WITH PARTNERS ARE CALLED MENTALLY ILL AND SHOULD TAKE MEDICATION

  23. CONCLUSION • MENTAL ILLNESS IS WIDESPREAD • BUT CAN’T SEPARATE DISTRESS FROM DISORDER • STUDIES OVERESTIMATE AMOUNT OF MENTAL ILLNESS • LEAD TO MEDICALIZATION • NEED TO INCORPORATE CONTEXT INTO STUDIES

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