Relationship between hyponatremia and medical history Medical history Hyponatremia (n=180) Normal (n=208) OR 95% CI p Diabetes Yes 19 (67, 9%) 9 (32, 1%) 2, 6 (1, 1 - 5, 9) 0, 018 No 161 (44, 7%) 199 (55, 3%) Hypertension with regular treatment Yes 31 (77, 5%) 9 (22, 5%) 4, 6 (2, 1 - 9, 9) <, 001 No 149 (42, 8%) 199 (57, 2%) Smoke Yes 38 (58, 5%) 27 (41, 5%) 1, 8 (1 - 3, 1) 0, 032 No 142 (44%) 181 (56%) Comment: Patients with diabetes had a 2.6 times higher risk of hyponatremia (p <0.05).