National Child Measurement Programme: Detailed Analysis of the ...

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National Child Measurement Programme: Detailed Analysis of the 2007/08 Dataset 17Figure 12: Prevalence of obesity in Reception children 2006/07 and 2007/08 by ethnic group18162006–072007–081412Prevalence (%)1086420WhiteMixedAsianBlackChineseEthnic groupOtherNot statedNoinformationHowever, Year 6 children in White and Asian ethnic groups have seen significant increases in reportedobesity prevalence (Figure 13). These increases may be a consequence of the differential changes inparticipation across different ethnic groups.Figure 13: Prevalence of obesity in Year 6 children 2006/07 and 2007/08 by ethnic group302006–072007–082520Prevalence (%)151050WhiteMixedAsianBlackChineseEthnic groupOtherNot statedNoinformation
National Child Measurement Programme: Detailed Analysis of the 2007/08 Dataset 18To investigate the differences between ethnic groups and prevalence of obesity further, odds ratioswere calculated for each of the main ethnic groups against White British as a reference (Table 9).Table 9: Odds ratios for the relative likelihood of the main ethnic groups being obese incomparison to the White British ethnic group, with 95% confidence intervalsBangladeshiBlack AfricanBlack CaribbeanChineseIndianPakistaniBoysGirlsReception Year 6 Reception Year 61.588*1.387, 1.8191.811*1.609, 2.0391.400*1.213, 1.6160.8680.636, 1.1830.9480.827, 1.0871.309*1.163, 1.4731.799*1.612, 2.0071.498*1.360, 1.6511.569*1.407, 1.7501.0010.804, 1.3571.368*1.237, 1.5131.564*1.422, 1.7211.382*1.188, 1.6052.146*1.894, 2.4311.642*1.414, 1.9090.323*0.191, 0.5460.8820.758, 1.0281.328*1.168, 1.5081.180*1.041, 1.3371.973*1.786, 2.1812.104*1.879, 2.3560.530*0.390, 0.7201.0280.917, 1.1501.3360.921, 1.084White British 1 1 1 1* significant at the 5% levelWhite British was chosen as the reference category as this is the largest ethnic group measured in theNCMP. In order to act as a reference the odds of a White British individual being classified as obesewere set as one. The odds ratios for other ethnic groups show the relative likelihood of individualsfrom an ethnic group being classified as obese, in comparison to those within the White Britishethnic group. Any figure above 1 means that they are more likely to be classified as obese than theWhite British population, whilst any figure below 1 means that they are less likely. Significance wascalculated at the 5% level (p = 0.05) by examining 95% confidence intervals. Where the confidenceintervals go through 1 there was no significance at the 5% level.Many of the ethnic groups were significantly more likely to be classified as obese than individuals fromthe White British ethnic group, with only girls from the Chinese ethnic group found to be significantlyless likely to be classified as obese.
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