EORTC-QLQ-30 Score at 1 month follow up. EORTC-QLQ-30 Score consists of 30 items covered by 1 of 3 dimensions:

• Global health status/quality of life (2 items) with scores ranging from 1 (Very Poor) to 7 (Excellent).
• Functional scales (15 total items addressing either physical, role, emotional, cognitive, or social functioning), each item scores ranging from 1 (not at all) to 4 (very much).
• Symptom scales (13 total items addressing either fatigue, nausea/vomiting, pain, dyspnoea, insomnia, appetite loss, constipation, diarrhea, or financial impact), each item scores ranging from 1 (not at all) to 4 (very much).

All domain scores are calculated as an average of item scores and transformed to 0 to 100 score range. A high score for a functional scale represents a high/healthy level of functioning, a high score for the global health status/quality of life (QoL) represents a high QoL, but a high score for a symptom scale/item represents a high level of symptomatology/problem.

EORTC-QLQ-30 Score at 3 months follow up. EORTC-QLQ-30 Score consists of 30 items covered by 1 of 3 dimensions:

• Global health status/quality of life (2 items) with scores ranging from 1 (Very Poor) to 7 (Excellent).
• Functional scales (15 total items addressing either physical, role, emotional, cognitive, or social functioning), each item scores ranging from 1 (not at all) to 4 (very much).
• Symptom scales (13 total items addressing either fatigue, nausea/vomiting, pain, dyspnoea, insomnia, appetite loss, constipation, diarrhea, or financial impact), each item scores ranging from 1 (not at all) to 4 (very much).

All domain scores are calculated as an average of item scores and transformed to 0 to 100 score range. A high score for a functional scale represents a high/healthy level of functioning, a high score for the global health status/quality of life (QoL) represents a high QoL, but a high score for a symptom scale/item represents a high level of symptomatology/problem.

EORTC-QLQ-30 Score at 6 months follow up. EORTC-QLQ-30 Score consists of 30 items covered by 1 of 3 dimensions:

• Global health status/quality of life (2 items) with scores ranging from 1 (Very Poor) to 7 (Excellent).
• Functional scales (15 total items addressing either physical, role, emotional, cognitive, or social functioning), each item scores ranging from 1 (not at all) to 4 (very much).
• Symptom scales (13 total items addressing either fatigue, nausea/vomiting, pain, dyspnoea, insomnia, appetite loss, constipation, diarrhea, or financial impact), each item scores ranging from 1 (not at all) to 4 (very much).

All domain scores are calculated as an average of item scores and transformed to 0 to 100 score range. A high score for a functional scale represents a high/healthy level of functioning, a high score for the global health status/quality of life (QoL) represents a high QoL, but a high score for a symptom scale/item represents a high level of symptomatology/problem.

Physical performance at 1 month follow-up, measured by the Short Physical Performance Battery (SPPB), a 10-minute provider-administered test of balance, 4-meter walk, and chair stands, which predicts disability and mortality in older adults and cancer patients. Each of the 3 tests are scored from 0-4 and summed for a total scale range of 0-12, with higher scores indicating better physical function.

Physical performance at 3 month follow-up, measured by the Short Physical Performance Battery (SPPB), a 10-minute provider-administered test of balance, 4-meter walk, and chair stands, which predicts disability and mortality in older adults and cancer patients. Each of the 3 tests are scored from 0-4 and summed for a total scale range of 0-12, with higher scores indicating better physical function.

Physical performance at 6 months follow-up, measured by the Short Physical Performance Battery (SPPB), a 10-minute provider-administered test of balance, 4-meter walk, and chair stands, which predicts disability and mortality in older adults and cancer patients. Each of the 3 tests are scored from 0-4 and summed for a total scale range of 0-12, with higher scores indicating better physical function.

Patient reported toxicity outcomes as measured using the PRO-CTCAE scale at post-RT. The PRO-CTCAE is a 5-minute survey, integrating patient perspectives into clinicians' reporting of treatment toxicity. It is validated for use in medical and radiation oncology and has revealed clinician underreporting of toxicity severity in older patients. The survey is scored on a 0-5-point scale, where higher outcomes indicate worse health outcomes.

Patient reported toxicity outcomes as measured using the PRO-CTCAE scale at 1 month follow-up. The PRO-CTCAE is a 5-minute survey, integrating patient perspectives into clinicians' reporting of treatment toxicity. It is validated for use in medical and radiation oncology and has revealed clinician underreporting of toxicity severity in older patients. The survey is scored on a 0-5-point scale, where higher outcomes indicate worse health outcomes.

Patient reported toxicity outcomes as measured using the PRO-CTCAE scale at 3 months follow-up. The PRO-CTCAE is a 5-minute survey, integrating patient perspectives into clinicians' reporting of treatment toxicity. It is validated for use in medical and radiation oncology and has revealed clinician underreporting of toxicity severity in older patients. The survey is scored on a 0-5-point scale, where higher outcomes indicate worse health outcomes.

Patient reported toxicity outcomes as measured using the PRO-CTCAE scale at 6 months follow-up. The PRO-CTCAE is a 5-minute survey, integrating patient perspectives into clinicians' reporting of treatment toxicity. It is validated for use in medical and radiation oncology and has revealed clinician underreporting of toxicity severity in older patients. The survey is scored on a 0-5-point scale, where higher outcomes indicate worse health outcomes.