A Cross-Sectional Seroepidemiological Study on Infectious Bursal Disease in Backyard Chickens in the Mymensingh District of Bangladesh

Table 3

Univariate association between seroprevalence of IBDV using ELISA with different factors.

Variable	Category	Positive, n (%)	95% CI (%)	value
Location	Mymensingh Sadar	160 (84.2)	78.3–88.7	0.06
	Fulbaria	80 (88.8)	80.5–94.0
	Muktagacha	49 (81.6)	69.9–89.6
	Phulpur	60 (85.7)	75.4–92.2
	Trishal	35 (70.0)	56.1–80.9
Sex	Male	39 (35.4)	27.1–44.7	0.00
	Female	345 (98.6)	96.6–99.4
Age	1–3 weeks	20 (33.3)	22.6–45.9	0.00
	4–6 weeks	244 (95.3)	91.9–97.3
	7–12 weeks	120 (83.3)	76.3–88.6
Status of health	Healthy	327 (81.7)	77.6–85.2	0.01
	Unhealthy	57 (95.0)	85.7–98.8
Breed type	Indigenous	326 (81.5)	77.3–85.0	0.00
	Crossbreed	58 (96.6)	87.9–99.7
Source	Home-reared	324 (83.1)	79.0–86.4	0.58
	Brought-in	60 (85.7)	75.4–92.2
Housing system	Free-ranging	280 (93.3)	89.8–95.6	0.00
	Separate house	104 (65.0)	57.3–71.9
Hygienic condition	Good	61 (61.0)	51.1–69.9	0.00
	Moderate	176 (83.8)	78.1–88.2
	Poor	147 (98.0)	94.0–99.5

Here, a value ≤ 0.05 was considered statistically significant, CI = confidence interval.