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. Author manuscript; available in PMC: 2015 Jul 22.
Published in final edited form as: NPJ Prim Care Respir Med. 2015 Jan 22;25:14112. doi: 10.1038/npjpcrm.2014.112

Figure 3.

Figure 3

Differences between PQ and GP data with respect to a) birth weight and b) gestational age according to ethnicity.

Solid horizontal lines represent the bias (i.e. mean difference) between the parental and GP data. Dashed lines represent the 95% limits of agreement between the two methods for the overall population. Bold solid vertical line indicate critical cut-offs of <2.5 kg for BW and <37 weeks for GA which were used to categorise children who were born low birth weight or preterm according to GPs. Points indicating extreme misclassification were excluded from this plot and analyses.