Name
time_since_last_period
Label
Last menstrual period
Description

Difference between date of reported last menstrual period and sleep study date in years

Units
years
Type
numeric
Study visit number vs Last menstrual period
N Mean StdDev Median Min Max Unknown Total
Visit 1 469 8.1 ± 9.0 5.0 0.0 42.3 654 1,123
Visit 2 312 11.7 ± 9.8 10.3 0.0 47.2 446 758
Visit 3 47 16.9 ± 10.1 16.5 0.2 43.7 519 566
Visit 4 - - - - - - 121 121
Visit 5 - - - - - - 2 2
Incident Outcomes Tracking - - - - - - - -
Sex of the participant vs Last menstrual period
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 469 8.1 ± 9.0 5.0 0.0 42.3 654 1,123
Male - - - - - - 608 608
Female 469 8.1 ± 9.0 5.0 0.0 42.3 46 515
Sex of the participant vs Last menstrual period
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 312 11.7 ± 9.8 10.3 0.0 47.2 446 758
Male - - - - - - 406 406
Female 312 11.7 ± 9.8 10.3 0.0 47.2 40 352
Sex of the participant vs Last menstrual period
Visit 3
N Mean StdDev Median Min Max Unknown Total
Total 47 16.9 ± 10.1 16.5 0.2 43.7 519 566
Male - - - - - - 304 304
Female 47 16.9 ± 10.1 16.5 0.2 43.7 215 262
Sex of the participant vs Last menstrual period
Visit 4
N Mean StdDev Median Min Max Unknown Total
Total - - - - - - 121 121
Male - - - - - - 67 67
Female - - - - - - 54 54
Sex of the participant vs Last menstrual period
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total - - - - - - 2 2
Male - - - - - - - -
Female - - - - - - 2 2
Race of the participant vs Last menstrual period
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 469 8.1 ± 9.0 5.0 0.0 42.3 654 1,123
Asian 1 0.0 - 0.0 0.0 0.0 11 12
Black 6 5.7 ± 7.0 4.1 0.0 17.5 17 23
Hispanic 3 12.6 ± 6.1 9.8 8.3 19.5 10 13
Native American 3 1.4 ± 1.0 1.5 0.4 2.3 7 10
White 456 8.1 ± 9.1 5.0 0.0 42.3 609 1,065
Race of the participant vs Last menstrual period
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 312 11.7 ± 9.8 10.3 0.0 47.2 446 758
Asian 1 0.0 - 0.0 0.0 0.0 3 4
Black 3 3.7 ± 4.8 1.2 0.8 9.2 5 8
Hispanic 3 15.3 ± 4.6 14.4 11.3 20.4 3 6
Native American 2 3.7 ± 1.5 3.7 2.7 4.8 4 6
White 303 11.8 ± 9.8 10.5 0.0 47.2 431 734
Race of the participant vs Last menstrual period
Visit 3
N Mean StdDev Median Min Max Unknown Total
Total 47 16.9 ± 10.1 16.5 0.2 43.7 519 566
Asian 1 0.5 - 0.5 0.5 0.5 3 4
Black - - - - - - 4 4
Hispanic 1 15.3 - 15.3 15.3 15.3 4 5
Native American 1 6.4 - 6.4 6.4 6.4 3 4
White 44 17.5 ± 10.0 17.0 0.2 43.7 505 549
Race of the participant vs Last menstrual period
Visit 4
N Mean StdDev Median Min Max Unknown Total
Total - - - - - - 121 121
Asian - - - - - - 3 3
Black - - - - - - 1 1
Hispanic - - - - - - 2 2
Native American - - - - - - 2 2
White - - - - - - 113 113
Race of the participant vs Last menstrual period
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total - - - - - - 2 2
Asian - - - - - - - -
Black - - - - - - - -
Hispanic - - - - - - - -
Native American - - - - - - - -
White - - - - - - 2 2