Browsing by Author "Cussen Sanhueza, Diego"

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    Effects of mindfulness-based stress reduction on psychological distress in health workers: A three-arm parallel randomized controlled trial
    (Pergamon-Elsevier Science Ltd., 2022) Errazuriz Concha, Antonia; Schmidt, Kristin; Undurraga Fourcade, Eduardo Andrés; Medeiros Urzua, Sebastián; Baudrand Biggs, René Felipe; Cussen Sanhueza, Diego; Henríquez Henríquez, Marcela Patricia; Celhay, Pablo; Figueroa, Rodrigo A.
    Mindfulness-based Stress Reduction (MBSR) has shown good efficacy for improving wellbeing in employees experiencing occupational stress. However, comparisons with other interventions, longer-term follow-up, and data from varying sociocultural contexts are lacking. This three-arm, parallel randomised controlled trial (RCT) examined the effects of MBSR on psychological distress in non-physician health workers in direct contact with patients. 105 participants were randomly allocated to either: (1) MBSR (N = 35), (2) Stress Management Course (SMC; N = 34) or (3) wait-list (N = 36). Participants and those assessing outcomes were blinded to group assignment. Participants completed questionnaires pre- and post-intervention and four months after the intervention. Psychological distress was measured using the General Health Questionnaire (GHQ-12) and Outcome Questionnaire (OQ-45). Secondary outcomes included perceived stress, job satisfaction, mindfulness skills and changes in salivary cortisol. 77 participants completed measures post-intervention and 52 at 4-month follow-up. MBSR showed a post-intervention effect in reducing GHQ-12 (ss = -0.80 [SE = 1.58] p < 0.01) and OQ-45 (ss = -0.72, [SE = 5.87] p < 0.05) psychological distress, compared to SMC and in reducing GHQ-12 (ss = -1.30 [SE = 1.38] p < 0.001) and OQ-45 (ss = -0.71, [SE = 5.58] p < 0.01) psychological distress compared to wait-list condition. In our secondary outcome, only MBSR was associated with a decrease in the cortisol awaking response by 23% (p < 0.05). At follow-up, only effects of MBSR on the psychological distress 'social role' subscale (ss = -0.76 [SE = 1.31] p < 0.05) remained significant, compared to SMC. In conclusion, MBSR appears useful in reducing short-term psychological distress in healthcare workers, but these effects were not maintained at followup. Trial registration: ISRCTN12039804.
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    List prices and collusion in industrial markets
    (2021) Cussen Sanhueza, Diego; Montero Ayala, Juan Pablo; Figueroa González, Nicolás Andrés; Pontificia Universidad Católica de Chile. Instituto de Economía
    In several industrial markets secret discounts are the rule. Standard models suggest that if suppliers in these markets want to collude, they must develop an allocation structure to avoid discounts, but many antitrust cases are centered on their list price announcements. We build a testable theory that (i) rationalizes the publication of list prices, (ii) shows collusion through coordinated publication is possible, and (iii) informs the policy debate by pointing to indicators antitrust authorities should be concerned with.