Peste des Petits Ruminants (PPR) in Ethiopia: Analysis of a national serological survey

BMC Veterinary Research

Table 4 Descriptive statistics of qualitative variables and univariate associations with seropositive status against PPR (two-tailed P-values for the χ² – test of association).

Variable	Description	N	% of factor	% positive	P
Species		13 651	100		< 0.001
	Sheep	4 211	31	8.3
	Goats	4 585	33.5	9.4
	Shoats*	4 855	35.5	1.9
	Not available	1 000	10
Age		4 648	34		0.003
	Under 1 year old	41	0.9	0
	Between 1 and 2 years old	392	8.4	10.5
	Between 2 and 3 years old	2 014	43.3	9.7
	Over 3 years old	2 201	47.4	12.6
	Not available	9 003	66
Sex		5 868	43		0.013
	Males	1 007	17.2	7.0
	Females	4 861	82.8	9.4
	Not available	7 783	57

* Sheep and goats not being distinguished
Results of 2-tailed chi-squared tests of the hypothesis that species, age group and sex differed between positive and negative animals. A description of each variable is presented including the number and % of each category in the sampled population and the % of positive. The proportions of seropositive animals significantly differ between species, age groups and sex categories (P-value (P) < 0.05).

ISSN: 1746-6148