노인에 대한 인구 기반 조명 연구 (ENLIGHTENme)

실험적: 실내 조명 개입

실내 조명 개입 암에 할당된 사람에게는 집에 놓을 램프가 제공됩니다.

행동: 실내 조명 개입

실내 조명 개입 암에 할당된 사람에게는 기존 실내 조명을 보완하기 위해 대부분의 시간을 보내는 방에 설치하라는 구체적인 지침과 함께 집에 배치할 램프가 제공됩니다. 따라서 개입 팔의 모든 사람에게 LUMIE Halo 램프가 장착됩니다. 온백색 LED와 냉백색 LED를 모두 활용하는 Lumie Halo는 "주간" 모드에서 최대 밝기로 20cm에서 10,000럭스를 제공합니다. 터치 슬라이더를 사용하면 빛의 색온도를 혼합하면서 밝기를 조정할 수 있습니다.

활성 비교기: 대조군

대조군에 할당된 사람은 실내 조명 보충을 받지 않고 평가 절차만 거치게 됩니다.

행동: 실내 조명 없음

대조군에 할당된 사람은 실내 조명 보충을 받지 않고 평가 절차만 거치게 됩니다. 실외 개입에 대한 노출은 세 가지 방식으로 분석에서 고려됩니다. , 노출 기간 및 노출에 대한 생각, (3) 기준선에서 2주 동안 및 1년 동안의 빛 개입 후 24시간 동안 빛에 노출된 양을 기록합니다.

Change in Pittsburgh Sleep Quality Index (PSQI)

Pittsburgh Sleep Quality Index (PSQI) ranges from 0 (better) to 21 (worse). A score <= 5 is associated with good sleep quality, while a score > 5 is associated with poor sleep quality. A higher PSQI score indicates poorer sleep quality, therefore the hypothesis to be tested is that a participant's sleep quality will improve (i.e. PSQI score will decrease) at the end of the light intervention period compared to baseline. Hence, a negative PSQI difference between baseline and follow-up indicates an improvement in sleep quality.

Change in Mental and Physical Health (Euroqol 5D)

Change in mental and physical health as measured by Euroqol 5D difference between the baseline and the end of the light intervention period. The Euroqol 5D measures the perceived quality of life and ranges from - 0.57 (worst perceived quality of life) to 1 (best health state). A positive difference from baseline to the end of the follow-up period indicates an improvement in the quality of life.

Change in Circadian Rest-activity Measures - Interdaily Stability (IS)

Change in Interdaily Stability (IS), as derived from wrist actigraph, between the baseline and the end of the light intervention period.

Interdaily Stability (IS) is an index that estimates the stability of the 24-hour rest-activity rhythm across days, quantifying how consistent individual's daily pattern is over time. It ranges from 0 (absence of a stable rhythm) to 1 (perfectly stable rhythm). The hypothesis to be tested is that a participant's IS will increase at the end of the light intervention period compared to baseline; hence, a positive difference between baseline and follow-up indicates an improved rest-activity rhythm.

Change in Circadian Rest-activity Measures - Intradaily Variability (IV)

Change in Intradaily Variability (IV), as derived from wrist actigraphy, between the baseline and the end of the light intervention period.

Intradaily Variability (IV) is an index that reflects fragmentation of the 24-hour rest-activity rhythm within a day, based on the frequency of transitions between rest and activity. It ranges from 0 to 1, with higher values indicating more fragmented rhythms. The hypothesis to be tested is that a participant's IV will decrease at the end of the light intervention period compared to baseline; hence, a negative difference between baseline and follow-up indicates an improved rest-activity rhythm.

Change in Circadian Rest-activity Measures - Relative Amplitude (RA)

Change in Relative amplitude (RA), as derived from wrist actigraphy, between the baseline and the end of the light intervention period.

Relative Amplitude (RA) measures the strength of the 24-hour rhythm: (M10-L5)/(M10+L5). M10 is the mean activity during the 10 most active consecutive hours, and L5 during the 5 least active hours. RA ranges from 0 to 1 and reflects the normalized difference between the most active and least active periods of the day: higher values indicate a well-defined rhythm, lower values a weaker or disrupted rhythm. The hypothesis to be tested is that a participant's RA will increase at the end of the light intervention period compared to baseline; hence, a positive difference between baseline and follow-up indicates an improved rest-activity rhythm.