| . | Quartiles of UME . | Ptrend . | |||
|---|---|---|---|---|---|
| Q1 2.8 [< 4.0] . | Q2 5.4 [4.0, 6.8] . | Q3 8.4 [6.8, 10.5] . | Q4 14.1 [> 10.5] . | ||
| No. of participants | 277 | 276 | 276 | 276 | |
| Basic parameters | |||||
| Age, mean (SD), y | 73.4 (7.3) | 73.0 (7.2) | 71.3 (6.7) | 69.0 (6.5) | <.001 |
| Gender (male), n (%) | 92 (33.2) | 114 (41.3) | 152 (55.1) | 161 (58.3) | <.001 |
| BMI, mean (SD), kg/m2 | 22.9 (3.5) | 23.0 (3.1) | 23.0 (2.8) | 23.5 (2.8) | .023 |
| Education (≥13 y), n (%) | 53 (19.1) | 69 (25.0) | 87 (31.5) | 89 (32.2) | <.001 |
| Household income (≥ 4 million Japanese yen/y), n (%) | 107 (42.0) | 93 (37.7) | 125 (49.0) | 119 (45.2) | .13 |
| Night-shift work history, n (%) | 18 (7.2) | 11 (4.4) | 17 (6.6) | 26 (9.8) | .15 |
| Circadian rhythm parameters | |||||
| Daytime physical activity, mean (SD), count/min | 302.3 (101.6) | 300.1 (105.4) | 293.6 (102.6) | 297.0 (107.3) | .42 |
| Bedtime, mean (SD), clock time | 22:30 (1:10) | 22:27 (1:13) | 22:28 (1:09) | 22:29 (1:11) | .86 |
| Duration in bed (scotoperiod), mean (SD), min | 493.7 (76.9) | 495.3 (82.7) | 503.4 (78.8) | 498.1 (70.3) | .31 |
| Day length (photoperiod), median (IQR), min | 647 (609, 682) | 657 (636, 682) | 651 (628, 684) | 653 (623, 688.6) | .25 |
| Nighttime light levels (average ≥ 5 lux), n (%) | 52 (18.8) | 52 (19.0) | 58 (21.1) | 51 (18.7) | .88 |
| . | Quartiles of UME . | Ptrend . | |||
|---|---|---|---|---|---|
| Q1 2.8 [< 4.0] . | Q2 5.4 [4.0, 6.8] . | Q3 8.4 [6.8, 10.5] . | Q4 14.1 [> 10.5] . | ||
| No. of participants | 277 | 276 | 276 | 276 | |
| Basic parameters | |||||
| Age, mean (SD), y | 73.4 (7.3) | 73.0 (7.2) | 71.3 (6.7) | 69.0 (6.5) | <.001 |
| Gender (male), n (%) | 92 (33.2) | 114 (41.3) | 152 (55.1) | 161 (58.3) | <.001 |
| BMI, mean (SD), kg/m2 | 22.9 (3.5) | 23.0 (3.1) | 23.0 (2.8) | 23.5 (2.8) | .023 |
| Education (≥13 y), n (%) | 53 (19.1) | 69 (25.0) | 87 (31.5) | 89 (32.2) | <.001 |
| Household income (≥ 4 million Japanese yen/y), n (%) | 107 (42.0) | 93 (37.7) | 125 (49.0) | 119 (45.2) | .13 |
| Night-shift work history, n (%) | 18 (7.2) | 11 (4.4) | 17 (6.6) | 26 (9.8) | .15 |
| Circadian rhythm parameters | |||||
| Daytime physical activity, mean (SD), count/min | 302.3 (101.6) | 300.1 (105.4) | 293.6 (102.6) | 297.0 (107.3) | .42 |
| Bedtime, mean (SD), clock time | 22:30 (1:10) | 22:27 (1:13) | 22:28 (1:09) | 22:29 (1:11) | .86 |
| Duration in bed (scotoperiod), mean (SD), min | 493.7 (76.9) | 495.3 (82.7) | 503.4 (78.8) | 498.1 (70.3) | .31 |
| Day length (photoperiod), median (IQR), min | 647 (609, 682) | 657 (636, 682) | 651 (628, 684) | 653 (623, 688.6) | .25 |
| Nighttime light levels (average ≥ 5 lux), n (%) | 52 (18.8) | 52 (19.0) | 58 (21.1) | 51 (18.7) | .88 |
UME quartile values are expressed as median [IQR] in micrograms.
| . | Quartiles of UME . | Ptrend . | |||
|---|---|---|---|---|---|
| Q1 2.8 [< 4.0] . | Q2 5.4 [4.0, 6.8] . | Q3 8.4 [6.8, 10.5] . | Q4 14.1 [> 10.5] . | ||
| No. of participants | 277 | 276 | 276 | 276 | |
| Basic parameters | |||||
| Age, mean (SD), y | 73.4 (7.3) | 73.0 (7.2) | 71.3 (6.7) | 69.0 (6.5) | <.001 |
| Gender (male), n (%) | 92 (33.2) | 114 (41.3) | 152 (55.1) | 161 (58.3) | <.001 |
| BMI, mean (SD), kg/m2 | 22.9 (3.5) | 23.0 (3.1) | 23.0 (2.8) | 23.5 (2.8) | .023 |
| Education (≥13 y), n (%) | 53 (19.1) | 69 (25.0) | 87 (31.5) | 89 (32.2) | <.001 |
| Household income (≥ 4 million Japanese yen/y), n (%) | 107 (42.0) | 93 (37.7) | 125 (49.0) | 119 (45.2) | .13 |
| Night-shift work history, n (%) | 18 (7.2) | 11 (4.4) | 17 (6.6) | 26 (9.8) | .15 |
| Circadian rhythm parameters | |||||
| Daytime physical activity, mean (SD), count/min | 302.3 (101.6) | 300.1 (105.4) | 293.6 (102.6) | 297.0 (107.3) | .42 |
| Bedtime, mean (SD), clock time | 22:30 (1:10) | 22:27 (1:13) | 22:28 (1:09) | 22:29 (1:11) | .86 |
| Duration in bed (scotoperiod), mean (SD), min | 493.7 (76.9) | 495.3 (82.7) | 503.4 (78.8) | 498.1 (70.3) | .31 |
| Day length (photoperiod), median (IQR), min | 647 (609, 682) | 657 (636, 682) | 651 (628, 684) | 653 (623, 688.6) | .25 |
| Nighttime light levels (average ≥ 5 lux), n (%) | 52 (18.8) | 52 (19.0) | 58 (21.1) | 51 (18.7) | .88 |
| . | Quartiles of UME . | Ptrend . | |||
|---|---|---|---|---|---|
| Q1 2.8 [< 4.0] . | Q2 5.4 [4.0, 6.8] . | Q3 8.4 [6.8, 10.5] . | Q4 14.1 [> 10.5] . | ||
| No. of participants | 277 | 276 | 276 | 276 | |
| Basic parameters | |||||
| Age, mean (SD), y | 73.4 (7.3) | 73.0 (7.2) | 71.3 (6.7) | 69.0 (6.5) | <.001 |
| Gender (male), n (%) | 92 (33.2) | 114 (41.3) | 152 (55.1) | 161 (58.3) | <.001 |
| BMI, mean (SD), kg/m2 | 22.9 (3.5) | 23.0 (3.1) | 23.0 (2.8) | 23.5 (2.8) | .023 |
| Education (≥13 y), n (%) | 53 (19.1) | 69 (25.0) | 87 (31.5) | 89 (32.2) | <.001 |
| Household income (≥ 4 million Japanese yen/y), n (%) | 107 (42.0) | 93 (37.7) | 125 (49.0) | 119 (45.2) | .13 |
| Night-shift work history, n (%) | 18 (7.2) | 11 (4.4) | 17 (6.6) | 26 (9.8) | .15 |
| Circadian rhythm parameters | |||||
| Daytime physical activity, mean (SD), count/min | 302.3 (101.6) | 300.1 (105.4) | 293.6 (102.6) | 297.0 (107.3) | .42 |
| Bedtime, mean (SD), clock time | 22:30 (1:10) | 22:27 (1:13) | 22:28 (1:09) | 22:29 (1:11) | .86 |
| Duration in bed (scotoperiod), mean (SD), min | 493.7 (76.9) | 495.3 (82.7) | 503.4 (78.8) | 498.1 (70.3) | .31 |
| Day length (photoperiod), median (IQR), min | 647 (609, 682) | 657 (636, 682) | 651 (628, 684) | 653 (623, 688.6) | .25 |
| Nighttime light levels (average ≥ 5 lux), n (%) | 52 (18.8) | 52 (19.0) | 58 (21.1) | 51 (18.7) | .88 |
UME quartile values are expressed as median [IQR] in micrograms.
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