Emerging evidence suggests that both extending kindness towards others and self-kindness practices may have beneficial effects on well-being. This randomized pilot clinical trial will investigate the efficacy of two kindness interventions -acts of kindness (to self or to other) and loving-kindness meditation- for use with early-stage breast cancer survivors.
PRIMARY OBJECTIVES: I. To refine two interventions - loving kindness and acts of kindness- for use with breast cancer survivors using an online platform. II. To determine the feasibility and preliminary efficacy of these interventions on positive affect, depressive symptoms, and other aspects of well-being among women with breast cancer. OUTLINE: Participants are randomized to 1 of 4 groups. GROUP I (ACTS OF KINDNESS TO OTHERS): Participants perform small acts of kindness or generosity for others 3 times per week for 4 weeks and complete weekly online questionnaires. GROUP II (ACTS OF KINDNESS TO SELF): Participants perform small acts of kindness for themselves 3 times per week for 4 weeks and complete weekly online questionnaires. GROUP III (SELF-KINDNESS MEDITATION): Participants direct kind, loving thoughts to themselves, via guided meditation, 3 times per week for 4 weeks and complete weekly online questionnaires. GROUP IV (CONTROL): Participants keep track of their daily activities, focusing on factual information rather than thoughts and feelings, on 3 separate days each week. At the end of the week, participants report on their activities and complete several online questionnaires.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
NONE
Enrollment
133
Perform acts of kindness to others
Perform acts of kindness to self
Perform self-kindness meditation
Keep track of daily activities
Ancillary studies
UCLA / Jonsson Comprehensive Cancer Center
Los Angeles, California, United States
University of California-Riverside
Riverside, California, United States
Depressive symptoms (Center for Epidemiologic Studies Depression Scale)
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Depressive symptoms will be measured at baseline and post-intervention using the 20-item Center for Epidemiological Studies Depression Scale (CES-D). The CES-D is a measure of symptom severity across the previous week, and total scores range from 0 to 60. Higher scores indicate greater severity of depressive symptoms.
Time frame: Up to 2 years
Psychological well-being measured by the Mental Health Continuum-Short Form
Analyses will be conducted under the intent-to-treat principle, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Psychological well-being measured by the Mental Health Continuum-Short Form (MHC-SF) Well-being will be measured at both baseline and post-intervention via the 14-item MHC-SF. Total scores range from 0 to 70, with higher scores indicating greater overall well-being. The MHC-SF is comprised of three empirically derived subscales: the 3-item Emotional Well-Being Subscale (score range: 0 to 15), the 6-item Psychological Well-Being Subscale (score range: 0 to 30), and the 5-item Social Well-Being Subscale (score range: 0 to 25). Higher scores on each subscale indicate greater well-being within that domain.
Time frame: Up to 2 years
Big-5 Personality Dimensions measured by the Ten-Item Personality Inventory (TIPI)
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Big-5 Personality Dimensions measured by the Ten-Item Personality Inventory (TIPI) measured at baseline: Personality dimensions will be measured at baseline by the 10-item TIPI. There are 5 subscales on the TIPI, each with 2-items: Extraversion, Agreeableness, Conscientiousness, Emotional Stability, and Openness to Experience. Scores on each subscale range from 2 to 14, with higher scores indicating greater endorsement of the corresponding personality domain.
Time frame: Baseline
Empathy measured by the Perspective Taking & Empathic Concern Subscales of the Interpersonal Reactivity Index
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Empathy measured by the Perspective Taking \& Empathic Concern Subscales of the Interpersonal Reactivity Index: Empathy will be measured pre- and post-intervention using the 6-item Perspective Taking (range: 0 to 30) and 7-item Empathic Concern Subscales (range: 0-35) of the IRI. Higher scores indicate greater characteristics of empathy.
Time frame: Up to 2 years
Fatigue measured by the Severity items of the Fatigue Symptom Inventory
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Fatigue measured by the Severity items of the Fatigue Symptom Inventory (FSI): Fatigue will be measured pre- and post-intervention using the 4-item Severity subscale of the FSI. Scores range from 0 to 40, with higher scores indicating greater severity.
Time frame: Up to 2 years
Fulfillment of psychological needs measured by the Balanced Measure of Psychological Needs
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Fulfillment of psychological needs measured by the Balanced Measure of Psychological Needs: Fulfillment of psychological needs will be measured weekly using the 9-item Balanced Measure of Psychological Needs. Scores range from 5 to 45, with higher scores indicating greater life satisfaction.
Time frame: Up to 2 years
Life satisfaction measured by the Satisfaction with Life Scale
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Life Satisfaction measured by the Satisfaction with Life Scale: Satisfaction with life will be measured pre- and post-intervention using the 5-item Satisfaction With Life Scale. Scores range from 5 to 35, with higher scores indicating greater satisfaction. A score of 31 to 35 represents "extremely satisfied," for example.
Time frame: Up to 2 years
Pain measured by the Pain Subscale of the Rand Health 36-item Short Form Survey
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Pain measured by the Pain Subscale of the Rand Health 36-item Short Form Survey (SF-36): Pain severity and interference will be measured pre- and post-intervention using the 2-item pain subscale of the SF-36. Scores range from 0 to 100, with higher scores indicating less severity/interference.
Time frame: Up to 2 years
Positive and negative affect measured by the Affect-Adjective Scale
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Positive and negative affect measured by the Affect-Adjective Scale: Positive and negative affect will be measured weekly using the 9-item Affect-Adjective Scale. Three additional adjectives (i.e., embarrassed, uncomfortable, ashamed) were added by the researchers. Scores on the 4-item positive affect subscale range from 0 to 24, with higher scores indicating more positive affect. Scores on the 5-item negative affect subscale range from 0 to 30, with higher scores indicating greater negative affect.
Time frame: Up to 2 years
Qualitative assessment of acts performed
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Qualitative assessment of acts performed: At the end of each week, participants will be asked to report on their weekly activities via a free response text box. The content of these activities may be coded or analyzed to provide context to quantitative data.
Time frame: Up to 2 years
Self-kindness measured by the Self-Compassion Scale
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Self-kindness measured by the Self-Compassion Scale (SCS): Dispositional self-kindness will be measured pre- and post-intervention using the 5-item Self-Kindness Subscale of the SCS. Total scores on the Self-Kindness Subscale range from 5 to 25, with higher scores indicating greater levels of self-compassion.
Time frame: Up to 2 years
Sleep disturbance measured by the Patient-Reported Outcomes Measurement Information System Sleep Disturbance Scale
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Sleep disturbance measured by the PROMIS Sleep Disturbance Scale: Sleep disturbance will be measured pre- and post-intervention using the 4-item PROMIS Sleep Disturbance Scale. Scores range from 4 to 20, with higher scores indicating more disturbance.
Time frame: Up to 2 years
Social connection measured by the Attachment Subscale of the Social Provisions Scale
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Social connection measured by the Attachment Subscale of the Social Provisions Scale: Social connection will be measured pre- and post-intervention using the 4-item Attachment subscale of the Social Provisions Scale. Scores range from 4 to 16, with higher scores indicating greater social connection.
Time frame: Up to 2 years
Social support measured by the 2-way Social Support Scale
Analyses will be conducted under the intent-to-treat principle, including all participants in their assigned condition, accomplished by fitting models to all available data for each outcome measure, including data of participants with incomplete follow-up. Linear mixed models provide valid inferences under a missing at random assumption. Differences between conditions in change over time will be examined by testing condition-by-time interaction terms. Analyses will control for any participant characteristics with baseline imbalance among conditions or that differ between participants retained. Social support measured by the 2-way Social Support Scale: Social support will be measured pre- and post-intervention using the 21-item 2-way Social Support Scale. Total scores range from 0 to 105, with higher scores indicating more perceived support.
Time frame: Up to 2 years
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