Figure 1.
(a) Comparison of serum NT levels in normal and ASD children (i) Symbols represent individual data points, the long horizontal lines represent the mean and the shorter ones show the 95% confidence intervals (CI) for each group (ii) Data are presented as box plots with the horizontal line in the box separating the 2.5 and 97.5 percentiles and the bars showing standard deviation. (b) Correlation of number of ASD children with GI symptoms and high serum NT levels (P=0.0023, Fisher's exact test). Low NT levels are those below the mean, while high NT levels are those above the mean. ASD, autism spectrum disorder; GI, gastrointestinal; NT, neurotensin.