Figure 1From: Effect of changes in a food frequency questionnaire: comparing data from two national dietary survey instruments among 12-month-old infants Bland and Altman plot: energy intake (kJ) (n = 93). Differences between energy intake estimated with SFFQ-2007 and SFFQ-1999 plotted against the mean intake of energy from the two SFFQs. Dashed line represents mean difference, solid line represents mean difference ±2 SD.Back to article page