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Pet ownership, social support, and one-year survival after acute myocardial infarction in the Cardiac Arrhythmia Suppression Trial (CAST)

  • Erika Friedmann
    Correspondence
    Address for reprints: Erika Friedmann, PhD, Department of Health and Nutrition Sciences, Brooklyn College of CUNY, 2900 Bedford Avenue, Brooklyn, New York 11210-2889.
    Affiliations
    From the Department of Health and Nutrition Sciences, Brooklyn College of CUNY, Brooklyn, New York U.S.A.

    From the New Life Directions, Ellicott City, Maryland U.S.A.
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  • Sue A. Thomas
    Affiliations
    From the Department of Health and Nutrition Sciences, Brooklyn College of CUNY, Brooklyn, New York U.S.A.

    From the New Life Directions, Ellicott City, Maryland U.S.A.
    Search for articles by this author
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      Abstract

      Social support and pet ownership, a nonhuman form of social support, have both been associated with increased coronary artery disease survival. The independent effects of pet ownership, social support, disease severity, and other psychosocial factors on 1 year survival after acute myocardial infarction are examined prospectively. The Cardiac Arrhythmia Suppression Trial provided physiologic data on a group of post-myocardial infarction patients with asymptomatic ventricular arrhythmias. An ancillary study provided psychosocial data, including pet ownership, social support, recent life events, future life events, anxiety, depression, coronary prone behavior, and expression of anger. Subjects (n = 424) were randomly selected from patients attending participating Cardiac Arrhythmia Suppression Trial sites and completed baseline psycho-social questionnaires. One year survival data were obtained from 369 patients (87%), of whom 112 (30.4%) owned pets and 20 (5.4%) died. Logistic regression indicates that high social support (p <0.068) and owning a pet (p = 0.085) tend to predict survival independent of physiologic severity and demographic and other psychosocial factors. Dog owners (n = 87, 1 died) are significantly less likely to die within 1 year than those who did not own dogs (n = 282, 19 died; p <0.05); amount of social support is also an independent predictor of survival (p = 0.065). Both pet ownership and social support are significant predictors of survival, independent of the effects of the other psychosocial factors and physiologic status. These data confirm and extend previous findings relating pet ownership and social support to survival among patients with coronary artery disease.
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      References

        • Friedmann E
        • Katcher AH
        • Lynch JJ
        • Thomas SA
        Animal companions and one year survival of patients after discharge from a coronary care unit.
        Public Health Rep. 1980; 95: 307-312
        • Friedmann E
        • Katcher AH
        • Thomas SA
        • Lynch JJ
        • Messent PR
        Social interaction and blood pressure: the influence of animal companions.
        J Nerv Ment Dis. 1983; 171: 461-465
        • Allen KM
        • Blascovich J
        • Tomaka J
        • Kelsey RM
        Presence of human friends and pet dogs as moderators of autonomic responses to stress in women.
        J Pers Soc Psychol. 1991; 61: 582-589
        • Serpell JA
        Beneficial effects of pet ownership on some aspects of human health.
        J R Soc Med. 1991; 84: 717-720
        • The Cardiac Arrhythmia Suppression Trial (CAST) Investigators
        Preliminary report: effect of encainide and flecainide on mortality in a randomized trial of arrhythmia suppression after myocardial infarction.
        N Engl J Med. 1989; 321: 406-412
        • Anderson W
        • Reid P
        • Jennings GL
        Pet ownership and risk factors for cardiovascular disease.
        Med J Aust. 1992; 157: 298-301
        • Echt DS
        • Liebson PR
        • Mitchell LB
        • Peters RW
        • Obias-Manno D
        • Barker AH
        • Arensberg D
        • Baker A
        • Friedman L
        • Greene HL
        • Hunter ML
        • Richardson DW
        Mortality and morbidity in patients receiving encainide, flecainide, or placebo: the Cardiac Arrhythmia Suppression Trial.
        N Engl J Med. 1991; 324: 781-788
        • Greene HL
        • Roden DM
        • Katz RJ
        • Woosley RL
        • Salerno DM
        • Henthorn RW
        The Cardiac Arrhythmia Suppression Trial: First CAST…then CAST-II.
        J Am Coll Cardiol. 1992; 19: 894-898
        • Sarason IG
        • Sarason BR
        • Sheann EN
        • Pierce G
        A brief measure of social support: practical and theoretical implications.
        J Soc Pers Relationships. 1987; 4: 497-510
        • Holmes TH
        • Rahe RH
        The social readjustment rating scale.
        J Psychosom Res. 1967; 11: 213-218
        • Spielberger CDP
        • Lushene RE
        • Gorsuch RL
        Version 5 ed. STAI Manual. Consulting Psychologist Press, Palo Alto, CA1972
        • Zung WK
        A self rating depression scale.
        Arch Gen Psychiatry. 1965; 12: 63-70
        • Jenkins CD
        • Zyzanski SJ
        • Rosenman RH
        Version 5 ed. Jenkins Activity Survey Manual. Psychological Corporation, New York1979
        • Spielberger CD
        • Johnson EH
        • Russell SF
        • Crane RJ
        • Jacobs JA
        • Worden TJ
        The experience and expression of anger: construction and validation of anger expression scale.
        in: Chesney MA Rosenman RH Anger and Hostility in Cardiovascular and Behavioral Disorder. Hemisphere/McGraw Hill, New York1985: 5-30
        • Sarason IG
        • Levine HM
        • Basham RB
        • Sarason BR
        Assessing social support: The Social Support Questionnaire.
        J Pers Soc Psychol. 1983; 44: 127-139
        • Sarason IG
        • Sarason BR
        • Sheann EN
        Social support as an individual difference variable: its stability, origins, and relational aspects.
        J Pers Soc Psychol. 1986; 50: 845-855
        • Rowan A
        Companion animal demographics and unwanted animals in the United States.
        Anthrozoos. 1992; 5: 222-225
        • Gorkin L
        • Schron EB
        • Brooks MM
        • Wiklund I
        • Kellen J
        • Verter J
        • Schoen-berger JA
        • Pawitan Y
        • Morris M
        • Shumaker S
        Psychosocial predictors of mortality in the Cardiac Arrhythmia Suppression Trial-1 (CAST-1).
        Am J Cardiol. 1994; 71: 263-267
        • Friedmann E
        The role of pets in enhancing human wellbeing: physiological effects.
        in: Robinson I Waltham Book of Human Animal Interactions. Pergamon, Oxford1995: 33-53
        • Berkman LF
        • Leo-Summers L
        • Horwitz RL
        Emotional support and survival after myocardial infarction.
        Ann Intern Med. 1992; 117: 1003-1009
        • Williams RB
        • Barefoot JC
        • Califf RM
        • Haney TL
        • Saunders WB
        • Pryor DB
        • Hlatky MA
        • Siegler IC
        • Mark DB
        Prognostic importance of social and economic resources among medically treated patients with angiographically documented coronary artery disease.
        JAMA. 1992; 267: 520-525
        • Wilson CC
        The pet as an anxiolytic intervention.
        J Nerv Ment Dis. 1991; 179: 482-489
        • Siegel JM
        Stressful life events and use of physician services among the elderly: the moderating role of pet ownership.
        J Pers Soc Psychol. 1990; 58: 1081-1086