Composition of stimulated glandular salivas (mean (SD)) of SS positive patients (SS) and SS negative patients (non-SS) in the “observation group”. Statistical test used: independent sample t test. Significance marked with *. 95% Confidence interval of the difference (CI-diff) given. (Note: if zero is not included in the interval the difference is significant)
| Parotid saliva | SM/SL saliva | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| SS | Non-SS | SS | non-SS | |||||||
| Mean (SD) | No | Mean (SD) | No | CI-diff | Mean (SD) | No | Mean (SD) | No | CI-diff | |
| SM/SL, submandibular/sublingual; No, number of cases included. Missing cases result from insufficient amount of saliva available for full sialochemical analysis owing to an extremely low secretion rate in these patients. | ||||||||||
| Sodium (mmol/l) | 24 (14) | 48 | 4 (4) | 42 | 14 to 28* | 18 (14) | 43 | 6 (6) | 41 | 8 to 17* |
| Potassium (mmol/l) | 23 (7) | 48 | 30 (21) | 42 | −14 to −8* | 20 (16) | 43 | 20 (6) | 41 | −5 to 5 |
| Chloride (mmol/l) | 33 (21) | 28 | 18 (6) | 29 | 6 to 23* | 30 (24) | 21 | 16 (5) | 31 | 4 to 23* |
| Calcium (mmol/l) | 1.2 (0.7) | 42 | 1.3 (0.8) | 37 | −0.4 to 0.3 | 1.9 (0.7) | 33 | 2.2 (1.6) | 40 | −0.8 to 0.3 |
| Phosphate (mmol/l) | 4.4 (2.1) | 39 | 5.8 (2.9) | 35 | −2.5 to −0.2* | 2.4 (1.2) | 29 | 3.9 (1.7) | 41 | −2.2 to −0.9* |
| Urea (mmol/l) | 5.2 (2.2) | 41 | 6.1 (2.5) | 40 | −1.9 to 0.2 | 3.3 (2.1) | 31 | 4.0 (1.9) | 41 | −1.6 to 0.3 |
| Total protein (g/l) | 1.4 (0.9) | 37 | 1.2 (0.6) | 37 | −1.9 to 0.5 | 0.7 (0.4) | 33 | 0.7 (0.4) | 36 | −0.1 to 0.2 |
| Amylase (103U/l) | 566 (409) | 44 | 842 (486) | 38 | −435 to −36* | 139 (212) | 31 | 138 (121) | 36 | −86 to 88 |