BMD Hip Scan (CT+OS)
| File Name | Data as of | Population | Data collected | One row per | Rows |
|---|---|---|---|---|---|
| bmd_hip_ctos_inv.dat | 2/17/2024 | CT+OS | Baseline, Main | Bone Density Scan | 39,916 |
ID - WHI Participant Common ID Col 1
HIPDAYS - Hip scan days from randomization/enrollment Col 2
HIPVTYP - Hip scan visit type Col 3
HIPVY - Hip scan visit year Col 4 Visit year for which this BMD scan was collected.
HIPVCLO - Closest to visit within visit type and year Col 5 For forms entered with the same visit type and year, indicates the one closest to that visit's target date. Valid for forms entered with an annual visit type. Usage Notes: See data preparation document.
HIPEXPC - Expected for visit Col 6 The BMD scan was expected for this visit. In the CT, BMD was expected for a subsample of participants at Baseline, at Annual Visits 1, 3, 6 and 9, and at Close-Out. In the OS, for a subsample of participants at Baseline and at Annual Visits 3, 6 and 9. Usage Notes: This includes forms from the subsample of OS participants at year 6 that were enrolled in the three clinical centers participating in the WHI Osteoporosis sub study, as height and weight were collected on OS participants at year 6 by design; see table 16.1; on page 16-18b of volume 2.
HIPSDSCN - Side of the Hip Scan Col 7
HIPAREA - Area of the Total Hip (cm squared) Col 8
HIPBMC - BMC of the Total Hip (grams) Col 9
HIPBMD - BMD of the Total Hip (g/cm squared) Col 10
HIPBMDCOR - BMD of the Total Hip (corrected) (g/cm sq) Col 11 Usage Notes: Corrected BMD value is based on recommendations from the UCSF quality assurance report. For details see the Data Preparation document.
HIPTSCOR - Total Hip BMD T-score Col 12 Total Hip BMD T-score Usage Notes: The T-score represents the number of standard deviations the participant's BMD is above or below the mean for a healthy 30 year old woman of the same race/ethnicity. Based on HIPBMDCOR "BMD of the Total Hip (corrected)".
HIPNKAREA - Area of the Hip Neck (cm squared) Col 13
HIPNKBMC - BMC of the Hip Neck (grams) Col 14
HIPNKBMD - BMD of the Hip Neck (g/cm squared) Col 15
HIPNKTSCOR - Hip Femoral Neck BMD T-score Col 16 Hip Femoral Neck BMD T-score Usage Notes: The T-score represents the number of standard deviations the participant's BMD is above or below the mean for a healthy 30 year old woman of the same race/ethnicity. Based on HIPNKBMD "BMD of the Hip Neck".
HIPTRAREA - Area of the Hip Trochanter (cm squared) Col 17
HIPTRBMC - BMC of the Hip Trochanter (grams) Col 18
HIPTRBMD - BMD of the Hip Trochanter (g/cm squared) Col 19
HIPINAREA - Area of the Hip Intertrochanter (cm sq) Col 20
HIPINBMC - BMC of the Hip Intertrochanter (grams) Col 21
HIPINBMD - BMD of the Hip Intertrochanter (g/cm sq) Col 22
HIPWDAREA - Area of the Hip Wards Triangle (cm sq) Col 23
HIPWDBMC - BMC of the Hip Wards Triangle (grams) Col 24
HIPWDBMD - BMD of the Hip Wards Triangle (g/cm sq) Col 25
HIPQDR - QDR serial number of hip scanner Col 26
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Bone Density measurements were collected on a subsample of 11,020 participants at three clinical sites (see the subsample definitions on the previous WHI Data on this site). * See the 2005 progress report for a summary of bone mineral density analysis, including percent change from baseline; see page 2-6 for HT table, page 3-13 for DM, page 4-3 for CaD, and page 5-2 for OS. * For the standardized procedures for performing the measurements, see Vol. 6 – DXA Quality Assurance of the WHI (1993-2005) manuals under the Documentation tab.