Fig. 2

Subgroup analysis of proNGF. a Bar graph showing detection of serum proNGF as a binary variable, stratified by hyperthyroid status. See Table 2 for details. b Box (interquartile range) and whisker (5–95% range) demonstrating detection of serum proNGF as a continuous variable, stratified by hyperthyroid status. See Table 2 for details. c Box (interquartile range) and whisker (5–95% range) graph showing concentration of proNGF in biopsy rinse, stratified the presence of follicular lesions. See Table 3 for details. d Scatter plot (with median and interquartile range overlaid) showing concentration of proNGF in biopsy-rinse, stratified by malignant status of follicular lesions. See Table 3 for details