Table 3. Causes of readmission and risk reduction.

Cause for readmission	Control	Intervention	ARR (95% CI)	RRR (95% CI)	p -Value
n (%)	409 (75.5%)	133 (24.5%)
All cause	57 (13.9%)	8 (6.0%)	7.9 (2.7–13.2)	56.8 (11.9–78.9)	0.0146
Hyponatremia	17 (4.2%)	3 (2.3%)	1.9 (−1.3–5.1)	45.7 (−82.3–83.8)	0.3124
Hypernatremia	5 (1.2%)	1 (0.8%)	0.5 (−1.3–2.3)	38.5 (−422–92.8)	0.6523
Adrenal insufficiency	5 (1.2%)	1 (0.8%)	0.5 (−1.3–2.3)	38.5 (−422–92.8)	0.6523
Pain/headache	16 (3.9%)	4 (3.0%)	0.9 (−2.6–4.4)	23.1 (−125–80.1)	0.6308
CSF leak	14 (3.4%)	3 (2.3%)	1.2 (−1.9–4.2)	34.1 (−125–80.8)	0.5023
Epistaxis	11 (2.7%)	2 (1.5%)	1.8 (−1.4–3.8)	44.1 (−149–87.4)	0.4375

Note: Bold indicates statistically significant p -Values.

Abbreviations: ARR, absolute risk reduction; CI, confidence interval; CSF, cerebrospinal fluid; RRR, relative risk reduction.