Table 3 Comparison of Incidence Rate of Hyponatremia Across Different Age Groups
From: A retrospective study: exploring preoperative hyponatremia in elderly patients with hip fractures
|  | 60–69 years old | 70–79 years old | ≥ 80 years old |
|---|---|---|---|
Fracture group | 16/135 | 27/129 | 50/155 |
Control group | 0/26 | 1/92 | 2/48 |
χ² value | 2.225 | 19.111 | 15.179 |
P value | 0.136 | 0.000 | 0.000 |