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 |
Incident Outcomes Tracking | - | - | - | - | - | - | - | - |
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 |
Asian | 12 | 56.5 | ± 2.4 | 56.2 | 53.0 | 60.0 | - | 12 |
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 |
White | 1,065 | 56.8 | ± 2.3 | 57.0 | 49.0 | 73.0 | - | 1,065 |
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 |
Asian | 4 | 58.3 | ± 2.2 | 58.0 | 56.0 | 61.0 | - | 4 |
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 |
White | 732 | 56.8 | ± 2.2 | 57.0 | 34.0 | 63.0 | 2 | 734 |
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 |
Asian | 4 | 58.0 | ± 2.1 | 57.8 | 56.0 | 60.5 | - | 4 |
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 |
White | 549 | 56.8 | ± 2.1 | 57.0 | 51.0 | 63.0 | - | 549 |
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 |
Asian | 3 | 57.0 | ± 1.5 | 57.0 | 55.5 | 58.5 | - | 3 |
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 |
White | 113 | 56.8 | ± 2.2 | 57.0 | 51.0 | 62.0 | - | 113 |
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 |
Asian | - | - | - | - | - | - | - | - |
Black | - | - | - | - | - | - | - | - |
Hispanic | - | - | - | - | - | - | - | - |
Native American | - | - | - | - | - | - | - | - |
White | 2 | 55.0 | ± 1.4 | 55.0 | 54.0 | 56.0 | - | 2 |