Participants in this arm will receive a booklet about anxiety and depression in Spanish, English, or Mandarin/Cantonese. Research staff will call the participant 4 times over the course of 6 months to administer mental health items, a suicide questionnaire, and a question about medication side effects to mimic the administration schedule in the intervention group.

The Enhanced Usual Care condition includes written materials on depression and anxiety and 4 calls to participants over the course of 6 months to assess symptoms and safety.

Enhanced Usual Care: Participants in this arm will receive a booklet about anxiety and depression in Spanish, English, or Mandarin/Cantonese. Research staff will call the participant 4 times over the course of 6 months to administer mental health items, a suicide questionnaire, and a question about medication side effects to mimic the administration schedule in the intervention group.

Total of all reporting groups

The Hopkins Symptom Checklist-25 (HSCL-25) assessed past 2-week self-reported symptoms of depression and anxiety. The HSCL-25 includes 25 items, each rated from 1 (not at all) to 4 (extremely). Total scores are calculated by averaging all items (range 1 to 4, with higher scores indicating more severe symptoms).

The Short Physical Performance Battery (SPPB) objectively assessed physical functioning through balance, gait, and chair-rise timed tests. A summary performance score is calculated by summing categorical rankings on the three tests (range 0 to 12, with higher scores indicating better performance).

The Function Component of the Late Life Functioning and Disability Instrument (LLFDI) assessed self-reported physical functioning, with 32 items assessing difficulty (1 'cannot do' to 5 'none') to perform discrete actions or activities without the help of someone else or using assistive devices. Total scores are calculated by summing all items (range 32 to 160, with higher scores indicating fewer difficulties).

The 12-item version of the WHO Disability Assessment Schedule (WHODAS 2.0) assessed past 30-day self-reported disability to capture difficulty performing activities in six domains of life (1 'none' to 5 'extreme or cannot do'). Total scores are calculated by summing all items (range 12 to 60, with higher scores indicating greater disability).

The Enhanced Usual Care condition includes written materials on depression and anxiety and 4 calls to participants over the course of 6 months to assess symptoms and safety.

Enhanced Usual Care: Participants in this arm will receive a booklet about anxiety and depression in Spanish, English, or Mandarin/Cantonese. Research staff will call the participant 4 times over the course of 6 months to administer mental health items, a suicide questionnaire, and a question about medication side effects to mimic the administration schedule in the intervention group.

The Hopkins Symptom Checklist-25 (HSCL-25) assessed past 2-week self-reported symptoms of depression and anxiety. The HSCL-25 includes 25 items, each rated from 1 (not at all) to 4 (extremely). Total raw scores are calculated by averaging all items (range 1 to 4, with higher scores indicating more severe symptoms). Model-estimated marginal means for each treatment group at each follow-up timepoint were obtained using linear mixed-effects models with repeated measures of HSCL-25 scores across follow-up assessments, adjusting for baseline HSCL-25 scores.

Analysis followed intent-to-treat principles and included all randomized participants.

The Short Physical Performance Battery (SPPB) objectively assessed physical functioning through balance, gait, and chair-rise timed tests. A summary performance score is calculated by summing categorical rankings on the three tests (range 0 to 12, with higher scores indicating better performance). Model-estimated marginal means for each treatment group at each follow-up timepoint were obtained using linear mixed-effects models with repeated measures of SPPB scores across follow-up assessments, adjusting for baseline SPPB scores.

Analysis followed intent-to-treat principles and included all randomized participants.

The Function Component of the Late-Life Functioning and Disability Instrument (LLFDI) assessed self-reported physical functioning, with 32 items assessing difficulty (1 'cannot do' to 5 'none') to perform discrete actions or activities without the help of someone else or using assistive devices. Total scores are calculated by summing all items (range 32 to 160, with higher scores indicating fewer difficulties). Model-estimated marginal means for each treatment group at each follow-up timepoint were obtained using linear mixed-effects models with repeated measures of LLFDI scores across follow-up assessments, adjusting for baseline LLFDI scores.

Analysis followed intent-to-treat principles and included all randomized participants.

The 12-item version of the WHO Disability Assessment Schedule (WHODAS 2.0) assessed past 30-day self-reported disability to capture difficulty performing activities in six domains of life (1 'none' to 5 'extreme or cannot do'). Total scores are calculated by summing all items (range 12 to 60, with higher scores indicating greater disability). Model-estimated marginal means for each treatment group at each follow-up timepoint were obtained using linear mixed-effects models with repeated measures of WHODAS 2.0 scores across follow-up assessments, adjusting for baseline WHODAS 2.0 scores.

Analysis followed intent-to-treat principles and included all randomized participants.

The Enhanced Usual Care condition includes written materials on depression and anxiety and 4 calls to participants over the course of 6 months to assess symptoms and safety.

Enhanced Usual Care: Participants in this arm will receive a booklet about anxiety and depression in Spanish, English, or Mandarin/Cantonese. Research staff will call the participant 4 times over the course of 6 months to administer mental health items, a suicide questionnaire, and a question about medication side effects to mimic the administration schedule in the intervention group.

Study staff connected the participant immediately to the BEST emergency services team. The event was determined to be unrelated to the study protocol.