Table 5.

Subgroup analysis of the prevalence of Eimeria spp. according to geographic location and climatic variables.

		No. studies	No. examined	No. positive	% (95% CI*)	Heterogeneity	P-value	Univariate meta-regression
						χ 2		I2 (%)	P-value	Coefficient (95% CI)
Latitude									0.523	-0.057 (-0.121 to 0.234)
	20–30°	20	4,954	3,891	76.1% (61.25–88.32)	2329.12	0.00	99.2
	30–35°	28	6347	4554	80.5% (68.94–90.00)	2901.06	0.00	99.1	Reference
	35–40°	11	2,774	1,645	76.5% (59.07–90.28)	795.66	<0.01	98.7
	40–50°	2	250	197	68.2% (21.29–99.19)	40.18	<0.01	97.5
Longitude									0.533	0.071 (-0.152 to 0.294)
	80–105°	10	2,519	2,270	84.6% (74.84–92.34)	258.58	<0.01	96.5	Reference
	105–110°	22	5,404	3,766	79.7% (64.91–91.31)	3009.06	0.00	99.3
	110–120°	26	5196	3597	77.4% (66.03–87.06)	2011.65	0.00	98.8
	120–125°	5	578	454	75.2% (55.63–90.63)	98.02	<0.01	95.9
Precipitation (mm)									0.474	-0.088 (-0.330 to 0.154)
	0–400	10	3,131	2,131	71.4% (49.37–89.09)	1257.90	<0.01	99.3	Reference
	400–800	14	2742	2205	77.8% (65.09–88.40)	669.85	<0.01	98.1
	800-2000	21	3827	3094	79.8% (64.86–91.47)	2143.59	0.00	99.1
Temperature (°C)									0.277	0.128 (-0.103 to 0.360)
	-5–10	12	2,385	2,088	84.8% (78.36–90.29)	133.05	<0.01	91.7	Reference
	10–15	11	2134	1538	72.0% (44.08–93.08)	1654.60	0.00	99.4
	15–20	23	5181	3804	75.0% (61.20–86.55)	2374.38	0.00	99.1
Humidity (%)									0.139	0.303 (-0.098 to 0.705)
	30–60	12	3,658	3,214	82.6% (72.24–90.96)	546.34	<0.01	98.0
	60–70	17	1,948	1,494	76.1% (62.91–0.87)	609.19	<0.01	97.4
	70–80	19	3431	2093	76.7% (58.87–90.70)	2271.35	0.00	99.2
	80–100%	3	663	629	95.7% (93.14-97.72)	2.51	0.29	20.2	Reference
Altitude (m)									0.817	-0.020 (-0.186 to 0.146)
	4–100	26	3441	2391	79.2% (67.46–88.92)	1484.36	<0.01	98.3
	100–1500	30	7636	5,371	77.7% (65.64–87.73)	3878.01	0.00	99.3	Reference
	1500–5000	9	2,600	2325	81.2% (72.23–88.79)	179.51	<0.01	95.5

CI*, Confidence interval;

NA*, Not applicable.