combined_dep_and_ckb_logo

Section

Device Data.Bone mineral density

Data summary

Resurvey 2

Variable Stats / Values Freqs (% of Valid) Graph Missing
bmd_at_max_age [factor]
  1. No
  1. Yes
24343 ( 97.2% )
704 ( 2.8% )
205 (0.8%)
bmd_left_stiffness_index [numeric]
Mean (sd) : 88.1 (20.7)
min ≤ med ≤ max:
-416.7 ≤ 87.3 ≤ 186.9
IQR (CV) : 23.1 (0.2)
24812 distinct values 299 (1.2%)
bmd_right_stiffness_index [numeric]
Mean (sd) : 88.4 (22)
min ≤ med ≤ max:
-416.7 ≤ 87.7 ≤ 188
IQR (CV) : 23.3 (0.2)
24773 distinct values 335 (1.3%)
bmd_left_sos [numeric]
Mean (sd) : 1554.6 (52.3)
min ≤ med ≤ max:
0 ≤ 1552.8 ≤ 1886.1
IQR (CV) : 49.8 (0)
22696 distinct values 299 (1.2%)
bmd_right_sos [numeric]
Mean (sd) : 1554.6 (56.8)
min ≤ med ≤ max:
0 ≤ 1553.1 ≤ 1868
IQR (CV) : 50.1 (0)
22622 distinct values 335 (1.3%)
bmd_left_bua [numeric]
Mean (sd) : 109.4 (13.5)
min ≤ med ≤ max:
0 ≤ 108.7 ≤ 218.9
IQR (CV) : 17 (0.1)
24384 distinct values 299 (1.2%)
bmd_right_bua [numeric]
Mean (sd) : 109.8 (13.8)
min ≤ med ≤ max:
0 ≤ 109.3 ≤ 223.6
IQR (CV) : 17.2 (0.1)
24344 distinct values 335 (1.3%)
bmd_left_young_adult_perc [numeric]
Mean (sd) : 89 (20.7)
min ≤ med ≤ max:
-437.7 ≤ 88.1 ≤ 196.3
IQR (CV) : 23.1 (0.2)
24829 distinct values 299 (1.2%)
bmd_right_young_adult_perc [numeric]
Mean (sd) : 89.2 (22.1)
min ≤ med ≤ max:
-437.7 ≤ 88.4 ≤ 194.3
IQR (CV) : 23.2 (0.2)
24767 distinct values 335 (1.3%)
bmd_left_tscore [numeric]
Mean (sd) : -0.8 (1.4)
min ≤ med ≤ max:
-35.5 ≤ -0.8 ≤ 6.4
IQR (CV) : 1.6 (-1.9)
24191 distinct values 299 (1.2%)
bmd_right_tscore [numeric]
Mean (sd) : -0.7 (1.5)
min ≤ med ≤ max:
-35.5 ≤ -0.8 ≤ 6.2
IQR (CV) : 1.6 (-2)
24171 distinct values 335 (1.3%)
bmd_left_zscore [numeric]
Mean (sd) : 0.1 (1.3)
min ≤ med ≤ max:
-35.4 ≤ 0 ≤ 7.1
IQR (CV) : 1.4 (15.4)
24116 distinct values 299 (1.2%)
bmd_right_zscore [numeric]
Mean (sd) : 0.1 (1.4)
min ≤ med ≤ max:
-35.5 ≤ 0 ≤ 7
IQR (CV) : 1.4 (13.7)
24111 distinct values 335 (1.3%)
bmd_left_age_matched_perc [numeric]
Mean (sd) : 101.4 (22)
min ≤ med ≤ max:
-555.2 ≤ 100.3 ≤ 221.5
IQR (CV) : 23.6 (0.2)
24689 distinct values 299 (1.2%)
bmd_right_age_matched_perc [numeric]
Mean (sd) : 101.7 (23.5)
min ≤ med ≤ max:
-550 ≤ 100.8 ≤ 219.2
IQR (CV) : 23.3 (0.2)
24635 distinct values 335 (1.3%)
bmd_device_manufacturer [character]
  1. GE
25047 ( 100.0% )
205 (0.8%)
bmd_device_name [character]
  1. Achilles Express 2
25047 ( 100.0% )
205 (0.8%)

Generated by summarytools 1.0.1 (R version 4.3.1)
2024-02-27

Resurvey 2

Variable Stats / Values Freqs (% of Valid) Graph Missing
has_device_bmd_std [factor]
  1. No
  1. Yes
205 ( 0.8% )
25047 ( 99.2% )
0 (0.0%)

Generated by summarytools 1.0.1 (R version 4.3.1)
2024-02-27




International Coordinating Centre, China Kadoorie Biobank (CKB), CTSU, Nuffield Department of Population Health, University of Oxford Old Road Campus, Headington, Oxford, OX3 7LF

Tel: +44 (0)1865 743743 | Fax: +44 (0)1865 743985 | Email:

Copyright China Kadoorie Biobank (CKB), University of Oxford, (2024)

Page generated: 27-02-2024