Hybrid Type-2 Effectiveness-Implementation Study of Brief Culturally Adapted Behavioral Activation Therapy Delivered by Primary Care Psychologists for Adults With Depression in Indonesian Primary Care Setting: A Study Protocol of Pragmatic Parallel Cluster Randomized Controlled Trial

Change from Baseline in Depressive Symptoms as Assessed by Patient Health Questionnaire-9 (PHQ-9) at 1 Week after Intervention

时间窗: Baseline and 1 week post intervention

Participants will fill the PHQ-9 as self-reported questionnaire using paper and pencil format, administered by research assistant. PHQ-9 consists of nine items with four response from 'not at all' (0) to 'nearly every day' (3). The score of the PHQ-9 ranges from 0 to 27 with higher score indicating higher depressive symptoms.

Participant's Acceptability of Intervention as Assessed by Client Satisfaction Questionnaire-8 (CSQ-8)

时间窗: Post intervention (immediately after intervention completed)

Acceptability is defined as the participant's perception that a given treatment is agreeable, palatable, or satisfactory and will be measured using CSQ-8. CSQ-8 consists of 8 items with four optional responses. The score of the questionnaire will range from 1 to 32 with higher score indicating acceptability of intervention.

Clinical Provider's Perceived Acceptability as Assessed by Acceptability of Intervention Measure (AIM)

时间窗: through study completion, an average of 3 months

Acceptability is defined as the clinical provider's perception that a given treatment is agreeable, palatable, or satisfactory and will be measured by Acceptability of Intervention Measure (AIM). AIM consists of four items with five Likert-based responses. The score of the scale will range from 1 to 20 with higher score indicating higher acceptability to the intervention.

Clinical Provider's Perceived Feasibility as Assessed by Feasibility of Intervention Measure (FIM)

时间窗: through study completion, an average of 3 months

Feasibility is defined as the perceived extent to which the intervention can be successfully used or carried out in primary care setting from participants and clinical providers' perspectives and will be measured by Feasibility of Intervention Measure (FIM). FIM consists of four items with five Likert-type responses. The score of the scale will range from 1 to 20 with higher score indicating higher feasibility of the intervention.

Clinical Provider's Perceived Appropriateness as Assessed by Intervention Appropriateness Measure (IAM)

时间窗: through study completion, an average of 3 months

Appropriateness is defined as the perceived fit, relevance, or compatibility of brief culturally adapted behavioral activation for adults with depression in primary care setting from participant's and clinical provider's perspectives, and measured by Intervention Appropriateness Measure (IAM). IAM consists of four items with five Likert-based responses. The score of the scale will range from 1 to 20 with higher score indicating higher appropriateness of the intervention.

Qualitative Feedback on Acceptability, Feasibility, and Appropriateness from Participants and Clinical Providers as Assessed using Semi-structured Interview

时间窗: From enrollment to 1 week after intervention completed (for participants) through study completion, an average of 3 months (for clinical providers)

Participants and clinical providers will be asked about their experiences in receiving or providing the intervention through individual qualitative interview to understand their perceived acceptability, feasibility, and appropriateness in a more detailed and comprehensive way.