Parameters | Quartile | Unadjusted regression coefficient | P value | Adjusted regression coefficient | P value | R^{2} |

Body mass index (kg/m^{2}) | Quartile1 | – | – | 0.93 | ||

Quartile 2 | −16.4 (–16.5 to –17.3) | <0.0001 | −16.9 (–17.5 to –16.3) | <0.0001 | ||

Quartile 3 | −22.5 (–25.1 to –21.9) | <0.0001 | −23.5 (–24.1 to –22.9) | <0.0001 | ||

Quartile 4 | −29.7 (–28.7 to –28.4) | <0.0001 | −29.0 (–29.7 to –28.4) | <0.0001 | ||

Waist circumference (cm) | Quartile 1 | – | – | 0.87 | ||

Quartile 2 | −6.71 (–7.21 to –6.21) | <0.0001 | −6.6 (–7.1 to –6.1) | <0.0001 | ||

Quartile 3 | −9.40 (–9.92 to –8.82) | <0.0001 | −9.30 (–9.8 to –8.70) | <0.0001 | ||

Quartile 4 | −19.63 (–20.13 to –19.12) | <0.0001 | −19.5 (–20.6 to –18.9) | <0.0001 | ||

Hip circumference (cm) | Quartile 1 | – | – | 0.82 | ||

Quartile 2 | −6.29 (–6.91 to –0.566) | <0.0001 | −6.2 (–6.9 to –5.6) | <0.0001 | ||

Quartile 3 | – 8.17 (−8.82 to –7.51) | <0.0001 | −8.05 (–8.7 to –7.3) | <0.0001 | ||

Quartile 4 | – 19.98 (–20.64 to –19.33) | <0.0001 | −19.7 (–20.4 to –19.0) | <0.0001 | ||

Waist-hip ratio | Quartile 1 | – | – | 0.84 | ||

Quartile 2 | −0.008 (–0.011 to –0.005) | <0.0001 | −0.008 (–0.01–0.005) | <0.0001 | ||

Quartile 3 | – 0.018 (−0.021 to –0.015) | <0.0001 | −0.18 (–0.21 to –0.15) | <0.0001 | ||

Quartile 4 | – 0.009 (−0.012 to –0.006) | <0.0001 | −0.01 (–0.01 to –0.007) | <0.0001 | ||

Waist-height ratio | Quartile 1 | – | – | 0.74 | ||

Quartile 2 | −0.047 (–0.053 to –0.042) | <0.0001 | −0.04 (–0.05 to –0.04) | <0.0001 | ||

Quartile 3 | −0.07 (–0.07 to –0.06) | <0.0001 | −0.07 (–0.07 to –0.06) | <0.0001 | ||

Quartile 4 | −0.132 (–0.141 to –0.130) | <0.0001 | −0.13 (–0.14 to –0.12) | <0.0001 | ||

Subscapular /triceps ratio | Quartile 1 | – | – | 0.69 | ||

Quartile 2 | −0.18 (–0.20 to –0.17) | <0.0001 | −0.18 (–0.20 to –0.17) | <0.0001 | ||

Quartile 3 | −0.26 (–0.28 to –0.25) | <0.0001 | −0.26 (–0.28 to –0.25) | <0.0001 | ||

Quartile 4 | −0.15 (–0.170 to –0.14) | <0.0001 | −0.16 (–0.17 to –0.14) | <0.0001 | ||

Central skinfolds | Quartile 1 | – | – | 0.92 | ||

Quartile 2 | −33.6 (–34.82 to –32.5) | <0.0001 | −33.5 (–34.7 to –32.4) | <0.0001 | ||

Quartile 3 | −45.29 (–46.47 to –44.11) | <0.0001 | −45.0 (–46.2 to –43.8) | <0.0001 | ||

Quartile 4 | −52.5 (–53.7 to –51.40) | <0.0001 | −52.3 (–53.8 to –51.1) | <0.0001 | ||

Peripheral skinfolds | Quartile 1 | – | – | 0.0008 | ||

Quartile 2 | −0.77 (–3.07 to 1.51) | 0.51 | – | |||

Quartile 3 | −0.59 (–2.98 to 1.78) | 0.62 | – | |||

Quartile 4 | −0.098 (–2.48 to 2.29) | 0.93 | – | |||

Total skinfolds (Σ4SF) | Quartile 1 | – | – | |||

Quartile 2 | −65.88 (–68.55 to –63.21) | <0.0001 | −65.6 (–68.3 to –62.9) | <0.0001 | 0.90 | |

Quartile 3 | −88.25 (–91.03 to –85.48) | <0.0001 | −87.6 (–90.4 to –84.8) | <0.0001 | ||

Quartile 4 | −111.1 (–113.9 to –108.40) | <0.0001 | −110.5 (–113 to –107) | <0.0001 |

Adjusted for age, family income, education and hypertension. P value <0.05 is statistically significant.

Σ4SF, sum of 4 skinfolds.