Table 2.

Descriptive statistics for numerical data in 278 horses by group

Group	Variable	n	Mean	CI	SD	Min‐Max
No adverse reaction	Age (years)	182	4.4	3.9–5.0	3.6	0.1–22.3
	Body weight (kg)	181	471	455–487	112	146–700
	Neurologic signs (days)	141	168	104–232	387	1–4015
	CSF volume removed (mL)	46	44	40–48	13	0–60
	Contrast volume (mL)	152	52	50–54	12	15–80
	Contrast dose (mL/kg)	151	0.12	0.11–0.12	0.03	0.03–0.28
	Precontrast MAP (mmHg)	159	80	78–83	14	45–125
	Postcontrast MAP (mmHg)	176	78	76–79	9.5	58–112
	Myelography (minutes)	175	64	60–67	25	10–160
	Anesthesia (minutes)	180	96	91–100	31	45–205
	Recovery (minutes)	122	46	42–50	23	10–159
	Hospitalization (days)	146	4	3–6	7	0–49
Any adverse reaction	Age (years)	94	4.9	4.2–5.6	3.4	0.1–13.7
	Body weight (kg)	95	487	463–510	116	109–739
	Neurologic signs (days)	75	155	105–205	218	1–900
	CSF volume removed (mL)	14	49	45–54	8	30–60
	Contrast volume (mL)	69	56	53–60	15	30–110
	Contrast dose (mL/kg)	69	0.12	0.11–0.14	0.05	0.07–0.37
	Precontrast MAP (mmHg)	80	82	79–85	15	53–137
	Postcontrast MAP (mmHg)	95	79	77–82	13	55–128
	Myelography (minutes)	92	71	65–76	27	30–150
	Anesthesia (minutes)	94	101	95–107	30	50–190
	Recovery (minutes)	78	55	49–62	27	19–205
	Hospitalization (days)	91	8	5–10	12	0–60

n, number; CI, 95% confidence interval; SD, standard deviation; Min, minimum; Max, maximum; MAP, mean arterial pressure.

Precontrast MAP is the average for the 10 minutes before contrast‐medium injection. Postcontrast MAP is the average for 0–20 minutes following contrast‐medium injection.