Table 1. Percentiles for adult height, sitting height, leg length and relative leg length and IRR for breast cancer by these measurements among 23 864 postmenopausal women in the Diet, Cancer and Health cohort.
|
Percentiles
|
Incidence rate ratios
|
|||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Cohort (
n
=23 864)
|
Cases (
n
=1209)
|
Age-adjusted
|
Adjusted
a
|
Mutually adjusted
a
,
b
|
||||||||
| Characteristic | 5 | 50 | 95 | 5 | 50 | 95 | IRR c | 95% CI | IRR c | 95% CI | IRR c | 95% CI |
| Height (m) | 1.54 | 1.64 | 1.74 | 1.55 | 1.65 | 1.75 | 1.13 | 1.08–1.19 | 1.11 | 1.06–1.16 | ||
| Sitting height (m) | 0.81 | 0.87 | 0.92 | 0.82 | 0.87 | 0.92 | 1.22 | 1.12–1.34 | 1.18 | 1.08–1.29 | 1.14 | 1.04–1.25 |
| Leg lengthd (m) | 0.71 | 0.78 | 0.85 | 0.71 | 0.78 | 0.85 | 1.15 | 1.07–1.23 | 1.12 | 1.04–1.20 | 1.09 | 1.01–1.17 |
| Relative leg lengthe | 0.45 | 0.47 | 0.49 | 0.45 | 0.47 | 0.49 | 1.02 | 0.98–1.07 | 1.02 | 0.98–1.06 | ||
Abbreviations: CI=confidence interval; IRR=incidence rate ratios.
a
Adjusted for age, parity, age at birth of first child, age at menarche, use of HRT, duration of HRT, alcohol intake, length of schooling and BMI.
b
Sitting height and leg length mutually adjusted.
c
Per 5 cm increase except for relative leg length. Per 0.01 increase for relative leg length.
d
Subischial leg length=height – sitting height.
e
Relative leg length=subischial leg length/height.