Table 4.

Exploratory subgroup summary of serum amyloid A (SAA) concentrations in apparently healthy donkeys (Equus asinus).

Factor	Group	n	Mean ± SD (ng/mL)	Median (Q1-Q3) (ng/mL)	Range (ng/mL)	Test statistic	p-value
Sex	Jennies	92	10.89 ± 5.66	9.81 (7.65–11.97)	2.46–36.13	Kruskal–Wallis H = 5.79	0.055
Sex	Geldings	46	15.21 ± 13.98	11.03 (8.27–14.21)	3.53–67.10
Sex	Jacks	38	10.77 ± 8.78	8.50 (5.14–12.19)	0.00–39.98
Age	Young (<4 years)	56	10.76 ± 6.51	9.89 (7.22–12.08)	0.00–42.47	Kruskal–Wallis H = 1.26	0.532
Age	Adult (4–20 years)	115	12.72 ± 10.52	9.96 (7.72–12.50)	1.76–67.10
Age	Geriatric (>20 years)	5	8.83 ± 3.84	8.48 (7.56–8.49)	4.55–15.07
Breed	Standard-sized	138	11.79 ± 9.30	9.69 (7.49–12.02)	0.00–67.10	Kruskal–Wallis H = 2.80	0.246
Breed	Miniature	25	13.84 ± 10.01	10.92 (7.83–15.22)	4.07–53.21
Breed	Poitou	13	10.50 ± 8.35	9.30 (7.46–10.51)	1.76–36.13