Table 1.
Trends in mean trunk fat (95% CI) by race or ethnicity among US children aged 8–19 y, NHANES 2011–2012 to 2017–2018.
| Variable | Mean trunk fat (kg) | Absolute Increase a | P for trendb | |||
|---|---|---|---|---|---|---|
|
2011–12 (n = 1,828) |
2013–14 (n = 1,996) |
2015–16 (n = 1,907) |
2017–18 (n = 1,508) |
|||
| Overall | 7.05 (6.65–7.44) | 7.28 (6.75–7.81) | 7.07 (6.58–7.56) | 7.14 (6.87–7.41) | 0.09 | 0.50 |
| Age, y | ||||||
| 8–11 | 4.71 (4.30–5.13) | 4.79 (4.32–5.25) | 4.53 (4.18–4.88) | 4.85 (4.41–5.30) | 0.14 | 0.78 |
| 12–19 | 8.17 (7.62–8.73) | 8.51 (7.77–9.24) | 8.35 (7.79–8.92) | 8.39 (8.10–8.68) | 0.22 | 0.53 |
| Gender | ||||||
| Boys | 6.34 (5.85–6.83) | 6.59 (6.14–7.05) | 6.42 (5.80–7.05) | 6.54 (6.24–6.84) | 0.20 | 0.36 |
| Girls | 7.78 (7.24–8.32) | 8.04 (7.28–8.79) | 7.79 (7.15–8.43) | 7.81 (7.40–8.22) | 0.03 | 0.86 |
| RACE/ETHNICITY | ||||||
| Mexican American | ||||||
| All | 7.53 (7.02–8.03) | 8.01 (7.40–8.63) | 9.00 (8.43–9.58) | 8.17 (7.29–9.05) | 0.64 | 0.03 |
| Boys | 7.02 (6.42–7.63) | 7.15 (6.54–7.75) | 8.89 (7.74–10.05) | 7.53 (6.46–8.61) | 0.51 | 0.04 |
| Girls | 8.08 (7.33–8.83) | 8.95 (8.10–9.79) | 9.13 (8.18–10.08) | 8.84 (7.58–10.11) | 0.76 | 0.22 |
| Non-hispanic white | ||||||
| All | 6.95 (6.31–7.59) | 7.19 (6.41–7.96) | 6.66 (6.07–7.26) | 6.87 (6.38–7.37) | −0.08 | 0.71 |
| Boys | 6.09 (5.35–6.82) | 6.69 (6.02–7.36) | 5.94 (5.23–6.66) | 6.42 (5.89–6.95) | 0.33 | 0.23 |
| Girls | 7.80 (6.94–8.66) | 7.73 (6.57–8.90) | 7.47 (6.55–8.39) | 7.39 (6.70–8.08) | −0.41 | 0.47 |
| Non-hispanic black | ||||||
| All | 6.85 (6.17–7.53) | 6.75 (6.07–7.43) | 6.75 (5.82–7.69) | 6.99 (6.12–7.87) | 0.14 | 0.48 |
| Boys | 6.03 (5.42–6.63) | 5.51 (4.92–6.10) | 5.46 (4.42–6.51) | 5.86 (4.66–7.06) | −0.17 | 0.91 |
| Girls | 7.76 (6.70–8.82) | 8.08 (7.09–9.07) | 8.16 (6.86–9.46) | 8.16 (7.11–9.22) | 0.40 | 0.22 |
| Non-hispanic Asian | ||||||
| All | 6.17 (5.60–6.75) | 6.04 (5.59–6.49) | 5.85 (5.25–6.46) | 6.83 (6.14–7.52) | 0.66 | 0.17 |
| Boys | 5.68 (4.82–6.54) | 5.95 (5.08–6.81) | 5.12 (4.43–5.81) | 6.79 (6.00–7.59) | 1.11 | 0.12 |
| Girls | 6.74 (6.04–7.44) | 6.13 (5.57–6.70) | 6.75 (6.02–7.48) | 6.86 (5.96–7.76) | 0.12 | 0.48 |
| Other | ||||||
| All | 7.50 (5.99–9.02) | 7.85 (7.04–8.65) | 7.32 (6.48–8.15) | 7.07 (6.08–8.07) | −0.43 | 0.64 |
| Boys | 7.33 (4.64–10.01) | 6.86 (5.82–7.891) | 7.08 (5.81–8.35) | 6.38 (5.29–7.47) | −0.95 | 0.70 |
| Girls | 7.70 (6.91–8.48) | 8.95 (8.07–9.84) | 7.58 (6.84–8.31) | 8.00 (6.41–9.60) | 0.30 | 0.70 |
a
Absolute increase between NHANES 2011–2012 and NHANES 2017–2018.
b
Time trends in mean trunk fat from 2011–2012 to 2017–2018 were examined with a multiple linear regression model, with adjustment for age, gender, and race or ethnicity, when applicable. Bold values are the statistically significant p-values.