1. Sweat conductivity and chloride titration for cystic fibrosis diagnosis in 3834 subjects 
José Luis Lezana, Mario H. Vargas, José Karam-Bechara, Ruth S. Aldana, María E.Y. Furuya 
Journal of Cystic Fibrosis 
Volume 2, Issue 1, Pages 1-7 (March 2003)
DOI: /S (02)

2. Fig. 1
Relationship between results obtained with the conductivity method and chloride titration in a chloridimeter in sweat samples from 3834 subjects with (closed circles) or without (open circles) cystic fibrosis (chloride >60 mmol/l). rS, Spearman correlation coefficient.
Journal of Cystic Fibrosis 2003 2, 1-7DOI: ( /S (02) )

3. Fig. 2
Frequency distribution of conductivity values in subjects with (closed bars) or without (open bars) diagnosis of cystic fibrosis (chloride >60 mmol/l).
Journal of Cystic Fibrosis 2003 2, 1-7DOI: ( /S (02) )

4. Fig. 3
Receiver operating characteristics curve obtained in 3834 subjects, assessing the capacity of conductivity to predict cystic fibrosis diagnosis (chloride titration >60 mmol/l). Each circle represents a different conductivity cut-off value. The inset shows the complete range of conductivity cut-off values (1–150 mmol/l), while the main panel is a close-up of those cut-off values that achieved better performance, ranging from 94 (left lower corner) to 77 mmol/l (right upper corner). The closed circle shows the best conductivity cut off value (≥90 mmol/l), which yields 99.66% sensitivity without false positive results.
Journal of Cystic Fibrosis 2003 2, 1-7DOI: ( /S (02) )

5. Fig. 4
Relationship between chloride titration value and bias (conductivity minus chloride titration) among subjects with (closed circles) or without (open circles) cystic fibrosis.
Journal of Cystic Fibrosis 2003 2, 1-7DOI: ( /S (02) )

6. Fig. 5
Relationship between chloride titration result and the chloride titration/conductivity ratio in subjects with (closed circles) or without (open circles) cystic fibrosis.
Journal of Cystic Fibrosis 2003 2, 1-7DOI: ( /S (02) )