education_survey1 heightcm
Name
headcm
Label
Head circumference
Description

Position the tape slightly above the eyebrows in a horizontal plane to the back of the head, measuring the maximum circumference. Make sure not to include large amounts of hair and hair accessories under the tape. Pull tape slightly to compress hair and record measurement to the nearest 0.5 cm

Units
cm
Type
numeric
Study visit number vs Head circumference
N Mean StdDev Median Min Max Unknown Total
Visit 1 1,123 56.9 ± 2.3 57.0 49.0 73.0 - 1,123
Visit 2 756 56.8 ± 2.2 57.0 34.0 63.0 2 758
Visit 3 566 56.8 ± 2.1 57.0 51.0 63.0 - 566
Visit 4 121 56.9 ± 2.2 57.0 51.0 62.0 - 121
Visit 5 2 55.0 ± 1.4 55.0 54.0 56.0 - 2
Sex of the participant vs Head circumference
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 1,123 56.9 ± 2.3 57.0 49.0 73.0 - 1,123
Male 608 58.1 ± 1.8 58.0 52.8 65.5 - 608
Female 515 55.4 ± 1.9 55.3 49.0 73.0 - 515
Sex of the participant vs Head circumference
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 756 56.8 ± 2.2 57.0 34.0 63.0 2 758
Male 405 58.0 ± 1.7 58.0 51.7 63.0 1 406
Female 351 55.4 ± 2.0 55.5 34.0 61.0 1 352
Sex of the participant vs Head circumference
Visit 3
N Mean StdDev Median Min Max Unknown Total
Total 566 56.8 ± 2.1 57.0 51.0 63.0 - 566
Male 304 58.0 ± 1.6 58.0 52.0 63.0 - 304
Female 262 55.4 ± 1.6 55.5 51.0 59.5 - 262
Sex of the participant vs Head circumference
Visit 4
N Mean StdDev Median Min Max Unknown Total
Total 121 56.9 ± 2.2 57.0 51.0 62.0 - 121
Male 67 58.2 ± 1.6 58.0 55.0 62.0 - 67
Female 54 55.3 ± 1.7 55.0 51.0 59.0 - 54
Sex of the participant vs Head circumference
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 2 55.0 ± 1.4 55.0 54.0 56.0 - 2
Male - - - - - - - -
Female 2 55.0 ± 1.4 55.0 54.0 56.0 - 2
Race of the participant vs Head circumference
Visit 1
N Mean StdDev Median Min Max Unknown Total
Total 1,123 56.9 ± 2.3 57.0 49.0 73.0 - 1,123
White 1,065 56.8 ± 2.3 57.0 49.0 73.0 - 1,065
Black 23 57.6 ± 1.5 57.7 55.0 61.0 - 23
Hispanic 13 56.4 ± 2.0 57.0 53.0 59.5 - 13
Native American 10 57.4 ± 2.5 57.5 53.5 61.5 - 10
Asian 12 56.5 ± 2.4 56.2 53.0 60.0 - 12
Race of the participant vs Head circumference
Visit 2
N Mean StdDev Median Min Max Unknown Total
Total 756 56.8 ± 2.2 57.0 34.0 63.0 2 758
White 732 56.8 ± 2.2 57.0 34.0 63.0 2 734
Black 8 57.5 ± 1.3 57.8 55.0 59.0 - 8
Hispanic 6 55.6 ± 1.8 55.5 53.0 58.5 - 6
Native American 6 57.8 ± 2.0 57.0 56.0 61.0 - 6
Asian 4 58.3 ± 2.2 58.0 56.0 61.0 - 4
Race of the participant vs Head circumference
Visit 3
N Mean StdDev Median Min Max Unknown Total
Total 566 56.8 ± 2.1 57.0 51.0 63.0 - 566
White 549 56.8 ± 2.1 57.0 51.0 63.0 - 549
Black 4 58.5 ± 1.8 58.8 56.5 60.0 - 4
Hispanic 5 56.1 ± 2.3 55.5 53.0 59.0 - 5
Native American 4 58.4 ± 2.1 58.0 56.5 61.0 - 4
Asian 4 58.0 ± 2.1 57.8 56.0 60.5 - 4
Race of the participant vs Head circumference
Visit 4
N Mean StdDev Median Min Max Unknown Total
Total 121 56.9 ± 2.2 57.0 51.0 62.0 - 121
White 113 56.8 ± 2.2 57.0 51.0 62.0 - 113
Black 1 59.5 - 59.5 59.5 59.5 - 1
Hispanic 2 56.8 ± 1.1 56.8 56.0 57.5 - 2
Native American 2 58.3 ± 3.2 58.3 56.0 60.5 - 2
Asian 3 57.0 ± 1.5 57.0 55.5 58.5 - 3
Race of the participant vs Head circumference
Visit 5
N Mean StdDev Median Min Max Unknown Total
Total 2 55.0 ± 1.4 55.0 54.0 56.0 - 2
White 2 55.0 ± 1.4 55.0 54.0 56.0 - 2
Black - - - - - - - -
Hispanic - - - - - - - -
Native American - - - - - - - -
Asian - - - - - - - -