Severity of complicated versus uncomplicated subthreshold depression: New evidence on the “Monotonicity Thesis” from the national comorbidity survey

Jerome C. Wakefield, Mark F. Schmitz

    Research output: Contribution to journalArticle

    Abstract

    Background “Complicated” subthreshold depression (CsD) includes at least one of six pathosuggestive “complicated” symptoms: >6 months duration, marked role impairment, sense of worthlessness, suicidal ideation, psychotic ideation, and psychomotor retardation. “Uncomplicated” subthreshold depression (UsD) has no complicated features. Whereas studies show that complicated (CMDD) versus uncomplicated (UMDD) major depression differ substantially in severity and prognosis, UsD and CsD severity has not been previously compared. This study evaluates UsD and CsD pathology validator levels and examines whether the complicated/uncomplicated distinction offers incremental concurrent validity over the standard number-of-symptoms dimension as a depression severity measure. Methods Using nationally representative community data from the National Comorbidity Survey, seven depression lifetime history subgroups were identified: one MDD screener symptom (n=1432); UsD (n=430); CsD (n=611); UMDD (n=182); and CMDD with 5–6 symptoms (n=518), 7 symptoms (n=217), and 8–9 symptoms (n=291). Severity was evaluated using five concurrent pathology validators: suicide attempt, interference with life, help seeking, hospitalization, and generalized anxiety disorder. Results CsD validator levels are substantially higher than both UsD and UMDD levels, and similar to mild CMDD, disconfirming the “monotonicity thesis” that severity increase with symptom number. Complicated/uncomplicated status predicts severity, and when complicatedness is controlled, number of symptoms no longer predicts validator levels. Limitations Diagnoses were based on respondents’ fallible retrospective symptom reports during a lay-administered structured interview, which may not yield diagnoses comparable to clinicians’ assessments. Conclusion CsD is more severe than UsD and comparable to mild MDD. Complicated status more validly indicates depression severity than the standard number-of-symptoms measure.

    Original languageEnglish (US)
    Pages (from-to)101-109
    Number of pages9
    JournalJournal of Affective Disorders
    Volume212
    DOIs
    StatePublished - Apr 1 2017

    Fingerprint

    Comorbidity
    Depression
    Surveys and Questionnaires
    Pathology
    Suicidal Ideation
    Anxiety Disorders
    Suicide
    Hospitalization
    Interviews

    Keywords

    • Complicated depression
    • DSM-5
    • Harmful dysfunction
    • Major depression
    • Minor depression
    • Subthreshold depression

    ASJC Scopus subject areas

    • Clinical Psychology
    • Psychiatry and Mental health

    Cite this

    Severity of complicated versus uncomplicated subthreshold depression : New evidence on the “Monotonicity Thesis” from the national comorbidity survey. / Wakefield, Jerome C.; Schmitz, Mark F.

    In: Journal of Affective Disorders, Vol. 212, 01.04.2017, p. 101-109.

    Research output: Contribution to journalArticle

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    abstract = "Background “Complicated” subthreshold depression (CsD) includes at least one of six pathosuggestive “complicated” symptoms: >6 months duration, marked role impairment, sense of worthlessness, suicidal ideation, psychotic ideation, and psychomotor retardation. “Uncomplicated” subthreshold depression (UsD) has no complicated features. Whereas studies show that complicated (CMDD) versus uncomplicated (UMDD) major depression differ substantially in severity and prognosis, UsD and CsD severity has not been previously compared. This study evaluates UsD and CsD pathology validator levels and examines whether the complicated/uncomplicated distinction offers incremental concurrent validity over the standard number-of-symptoms dimension as a depression severity measure. Methods Using nationally representative community data from the National Comorbidity Survey, seven depression lifetime history subgroups were identified: one MDD screener symptom (n=1432); UsD (n=430); CsD (n=611); UMDD (n=182); and CMDD with 5–6 symptoms (n=518), 7 symptoms (n=217), and 8–9 symptoms (n=291). Severity was evaluated using five concurrent pathology validators: suicide attempt, interference with life, help seeking, hospitalization, and generalized anxiety disorder. Results CsD validator levels are substantially higher than both UsD and UMDD levels, and similar to mild CMDD, disconfirming the “monotonicity thesis” that severity increase with symptom number. Complicated/uncomplicated status predicts severity, and when complicatedness is controlled, number of symptoms no longer predicts validator levels. Limitations Diagnoses were based on respondents’ fallible retrospective symptom reports during a lay-administered structured interview, which may not yield diagnoses comparable to clinicians’ assessments. Conclusion CsD is more severe than UsD and comparable to mild MDD. Complicated status more validly indicates depression severity than the standard number-of-symptoms measure.",
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    N2 - Background “Complicated” subthreshold depression (CsD) includes at least one of six pathosuggestive “complicated” symptoms: >6 months duration, marked role impairment, sense of worthlessness, suicidal ideation, psychotic ideation, and psychomotor retardation. “Uncomplicated” subthreshold depression (UsD) has no complicated features. Whereas studies show that complicated (CMDD) versus uncomplicated (UMDD) major depression differ substantially in severity and prognosis, UsD and CsD severity has not been previously compared. This study evaluates UsD and CsD pathology validator levels and examines whether the complicated/uncomplicated distinction offers incremental concurrent validity over the standard number-of-symptoms dimension as a depression severity measure. Methods Using nationally representative community data from the National Comorbidity Survey, seven depression lifetime history subgroups were identified: one MDD screener symptom (n=1432); UsD (n=430); CsD (n=611); UMDD (n=182); and CMDD with 5–6 symptoms (n=518), 7 symptoms (n=217), and 8–9 symptoms (n=291). Severity was evaluated using five concurrent pathology validators: suicide attempt, interference with life, help seeking, hospitalization, and generalized anxiety disorder. Results CsD validator levels are substantially higher than both UsD and UMDD levels, and similar to mild CMDD, disconfirming the “monotonicity thesis” that severity increase with symptom number. Complicated/uncomplicated status predicts severity, and when complicatedness is controlled, number of symptoms no longer predicts validator levels. Limitations Diagnoses were based on respondents’ fallible retrospective symptom reports during a lay-administered structured interview, which may not yield diagnoses comparable to clinicians’ assessments. Conclusion CsD is more severe than UsD and comparable to mild MDD. Complicated status more validly indicates depression severity than the standard number-of-symptoms measure.

    AB - Background “Complicated” subthreshold depression (CsD) includes at least one of six pathosuggestive “complicated” symptoms: >6 months duration, marked role impairment, sense of worthlessness, suicidal ideation, psychotic ideation, and psychomotor retardation. “Uncomplicated” subthreshold depression (UsD) has no complicated features. Whereas studies show that complicated (CMDD) versus uncomplicated (UMDD) major depression differ substantially in severity and prognosis, UsD and CsD severity has not been previously compared. This study evaluates UsD and CsD pathology validator levels and examines whether the complicated/uncomplicated distinction offers incremental concurrent validity over the standard number-of-symptoms dimension as a depression severity measure. Methods Using nationally representative community data from the National Comorbidity Survey, seven depression lifetime history subgroups were identified: one MDD screener symptom (n=1432); UsD (n=430); CsD (n=611); UMDD (n=182); and CMDD with 5–6 symptoms (n=518), 7 symptoms (n=217), and 8–9 symptoms (n=291). Severity was evaluated using five concurrent pathology validators: suicide attempt, interference with life, help seeking, hospitalization, and generalized anxiety disorder. Results CsD validator levels are substantially higher than both UsD and UMDD levels, and similar to mild CMDD, disconfirming the “monotonicity thesis” that severity increase with symptom number. Complicated/uncomplicated status predicts severity, and when complicatedness is controlled, number of symptoms no longer predicts validator levels. Limitations Diagnoses were based on respondents’ fallible retrospective symptom reports during a lay-administered structured interview, which may not yield diagnoses comparable to clinicians’ assessments. Conclusion CsD is more severe than UsD and comparable to mild MDD. Complicated status more validly indicates depression severity than the standard number-of-symptoms measure.

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    KW - Major depression

    KW - Minor depression

    KW - Subthreshold depression

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