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Fig. 1 | BMC Public Health

Fig. 1

From: Disparities in physical fitness of 6–11-year-old children: the 2012 NHANES National Youth Fitness Survey

Fig. 1

Mean Age-adjusted Treadmill z-score by Income. N = 635 (Boys n = 306, Girls n = 329). The number within or adjacent to each bar indicates the mean value of the group. Each error bar indicates 95% confidence interval for the mean. a = significant difference between low (FIPR < 130%) and high (FIPR > = 350%) income groups, controlling for child’s age (p = 0.004). b = significant difference between middle (FIPR 130–349%) and high-income groups, controlling for child’s age (p = 0.020)

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