121 Salivary film thickness and MUC5B levels Table 1: Characteristics of the total study population (40 volunteers) and stratified according to sex. The total XI-scores, the unstimulated whole saliva (UWS), chewing-stimulated whole saliva (CH-SWS) flow rate (mL/min), salivary pH, and palatal surface area (mm2) were reported. Data are expressed as medians with the corresponding interquartile ranges (IQR) and as means with standard deviations (SD). The ICC is reported only for the palatal surface area measurement. Saliva Total study population Mean ± SD Total study population Median ± IQR Females Median ± IQR (N=18) Males Median ± IQR (N=22) UWS Flow rate 0.28 ± 0.15 0.25 ± 0.16-0.37 0.31 ± 0.16-0.43 0.23 ± 0.15-0.30 pH 6.56 ± 0.29 6.60 ± 6.39-6.77 6.66 ± 6.45-6.82 6.59 ± 6.29-6.71 CH-SWS Flow rate 1.26 ± 0.67 1.19 ± 0.74-1.58 1.30 ± 0.85-1.58 1.14 ± 0.72-1.61 pH 7.12 ± 0.31 7.14 ± 6.91-7.33 7.15 ± 6.98-7.34 7.13 ± 6.82-7.32 XI-total 19.9 ± 5.2 19.5 ± 16.3-23.8 19.5 ± 17.8-24.3 19.5 ± 15.8-23.3 Surface area (mm2) Palatal ICC=0.96 2123.8 ± 221.9 2138.0 ± 1975.5-2247.6 2050.6 ± 1868.4-2177.9* 2176.8 ± 2018.9-2260.5 * Female vs. male difference Mann-Whitney U test p-value<0.05 6
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