Fig. 2From: Evaluation of continuous constant current and continuous pulsed current in sweat induction for cystic fibrosis diagnosisThe comparison between continuous constant current (CCC) and sinusoidal pulsed current (SPC) and triangular pulsed current (TPC) for electrical impedance and sweat weight showed: (i) TPC presented higher electrical impedance values when compared with SPC and CCC; (ii) SPC presented lower electrical impedance and higher sweat weight when compared with CCC. a Arm site where induction was performed using CCC and continuous pulsed current. b Comparison between SPC and TPC for electrical impedance. (SPC) N = 54; 6.14 ± 2.08; 6.23 (2.12 to 11.05); 5.57 to 6.71; (TPC) N = 201; 7.94 ± 3.16; 7.82 (1.94 to 17.76); 7.5 to 8.38. c Comparison between CCC and TPC for electrical impedance. (CCC) N = 197; 8.9 ± 4.8; 8.15 (1.12 to 38.33); 8.23 to 9.60; (TPC) N = 197; 7.97 ± 3.2; 7.83 (1.94 to 17.76); 7.52 to 8.41. d Comparison between CCC and SPC for electrical impedance. (CCC) N = 54; 7.29 ± 2.98; 6.76 (2.95 to 17.11); 6.47 to 8.1; (SPC) N = 54; 6.14 ± 2.08; 6.23 (2.12 to 11.05); 5.57 to 6.71. e Comparison between CCC and SPC for sweat weight. (CCC) N = 55; 146 ± 46.1; 141 (50 to 234); 133.3 to 158.8; (SPC) N = 55; 179 ± 70.2; 176 (46 to 433); 159.7 to 197.1. All p-values were below 0.001. Data are presented as: number of individuals; mean ± standard deviation; median (minimum to maximum); confidence interval for the mean value. Statistical analysis conducted through Wilcoxon signed-rank test and Mann-Whitney U test of independent samples. Alpha = 0.05. The currents are shown as Ω using the following equation: [Z = VRMS / IRMS (Ω)]; Z = composite impedance (Ω); VRMS = effective voltage measured (volts root mean square); IRMS = effective current measured (current root mean square). Also, the sweat weight is shown as milligrams. Only the associations with p-value < 0.05 was presented as figureBack to article page