Overall n = 512 N = 13,503,522 | Plasma fluoride sample n = 473 N = 12,531,822 | Water fluoride sample n = 419 N = 11,577,700 | |
---|---|---|---|
Sleep durationa; N (%) | |||
Less than recommended | 3,912,903 (29.08) | 3,616,486 (28.97) | 3,519,194 (30.52) |
Recommended | 7,763,278 (57.70) | 7,181,883 (57.53) | 6,549,336 (56.80) |
More than recommended | 1,779,421 (13.22) | 1,685,533 (13.50) | 1461, 250 (12.67) |
Sleep apnea symptoms; N(%)b | |||
Never | 11,968,414 (89.81) | 11,010,121 (89.11) | 10,217,865 (89.51) |
At least 1 night per week | 1,358,534 (10.19) | 1,345,127 (10.89) | 1,196,827 (10.49) |
Snoring; N(%)c | |||
Never | 7,564,062 (58.07) | 6,919,753 (57.40) | 6,602,728 (59.35) |
At least 1 night per week | 5,462,602 (41.93) | 5,135,211 (42.60) | 4,521,444 (40.65) |
Trouble sleeping; N(%) | |||
Yes | 1,874,575 (13.88) | 1,764,264 (14.08) | 1,629,889 (14.08) |
No | 11,628,947 (86.12) | 10,767,558 (85.92) | 9,947,810 (85.92) |
Daytime sleepiness | |||
Never | 1,307,017 (9.68) | 1,185,750 (9.46) | 1,120,797 (9.68) |
Rarely – 1 time a month | 2,789,385 (20.66) | 2,532,161 (20.21) | 2,321,968 (20.06) |
Sometimes – 2-4 times a month | 4,255,661 (31.52) | 4,047,114 (32.29) | 3,638,287 (31.43) |
Often – 5-15 times a month | 4,104,292 (30.39) | 3,912,334 (31.22) | 3,596,810 (31.07) |
Almost always – 16-30 times a month | 1,047,168 (7.75) | 854,464 (6.82) | 899,838 (7.77) |
Wake time; Mean (SE)a | 7.15 (0.09) | 7.17 (0.10) | 7.15 (0.09) |
Bedtime; Mean (SE)a | 4.00 (0.10)d | 4.02 (0.11) | 4.02 (0.11) |