Table 2.
Adjusted estimated differences in WC (Est.) and 95% confidence intervals (CI) for select WC percentiles stratified by sex. ACLS data collected in the U.S. from 1970 to 2006.
| Percentiles | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 10th |
25th |
50th |
75th |
90th |
||||||
| Males | Est. | 95% CI | Est. | 95% CI | Est. | 95% CI | Est. | 95% CI | Est. | 95% CI |
| CRF (No Diabetes) | −0.43 | (−0.45, −0.41) | −0.51 | (−0.53, −0.50) | −0.60 | (−0.62, −0.59) | −0.71 | (−0.73, −0.70) | −0.82 | (−0.84, −0.80) |
| CRF (Diabetes) | −0.68 | (−0.74, −0.62) | −0.82 | (−0.88, −0.76) | −0.93 | (−1.00, −0.86) | −1.04 | (−1.11, −0.97) | −1.17 | (−1.25, −1.09) |
| CRF*Diabetes | −0.25 | (−0.31, −0.18) | −0.31 | (−0.37, −0.25) | −0.33 | (−0.40, −0.25) | −0.32 | (−0.40, −0.25) | −0.35 | (−0.43, −0.27) |
| Females | ||||||||||
| CRF (No Diabetes) | −0.23 | (−0.26, −0.21) | −0.34 | (−0.36, −0.31) | −0.49 | (−0.53, −0.46) | −0.69 | (−0.73, −0.65) | −0.85 | (−0.91, −0.80) |
| CRF (Diabetes) | −0.35 | (−0.45, −0.26) | −0.63 | (−0.87, −0.39) | −0.92 | (−1.15, −0.70) | −1.26 | (−1.38, −1.15) | −1.35 | (−1.72, −0.97) |
| CRF*Diabetes | −0.12 | (−0.22, −0.02) | −0.29 | (−0.53, −0.05) | −0.43 | (−0.66, −0.21) | −0.58 | (−0.70, −0.46) | −0.49 | (−0.87, −0.12) |
Note: Coefficients in bold indicate significant findings at p < 0.05. WC is measured in centimeters. Each of the quantile regression models were stratified by sex and include diabetes (yes/no), smoking (yes/no), height (in), birth cohort (1930 or earlier, 1931–1940, 1941–1950, 1951 or later), age (years) and CRF (ml O2·kg−1·min−1) and a two-way interaction between diabetes and CRF (diabetes*CRF) as predictors. The referent level for birth cohort is the group born 1930 or earlier.