Identification of risk factors associated with disclosure of false positive bovine tuberculosis reactors using the gamma-interferon (IFNγ) assay

Table 3 Logistic Generalised Estimating-Equation (GEE) and Alternating Logistic Regression (ALR) model of the probability of a false positive result to the IFNγ test.

Variable	Label	b	S.E.	OR	Low	Upper	p-value¹	p-value²
*GEE model*
Constant		-2.55	0.41
Age (years)	0.5-1	Referent						0.046
	2	-0.20	0.25	0.82	0.50	1.34	0.431
	3-4	0.17	0.26	1.19	0.71	1.98	0.518
	≥ 5	0.33	0.19	1.40	0.96	2.03	0.080
Region³	NE	Referent						0.035
	NW	-0.36	0.43	0.70	0.30	1.62	0.400
	SE	-0.26	0.56	0.77	0.26	2.30	0.643
	SW	0.80	0.41	2.23	1.00	4.98	0.051
Ρ		0.068
*ALR model*
Constant		-2.53	0.40
Age (years)	0.5-1	Referent						0.045
	2	-0.19	0.25	0.83	0.51	1.35	0.445
	3-4	0.16	0.27	1.18	0.70	1.99	0.542
	≥ 5	0.34	0.20	1.40	0.95	2.06	0.088
Region³	NE	Referent						0.026
	NW	-0.40	0.42	0.67	0.29	1.53	0.343
	SE	-0.34	0.51	0.71	0.26	1.95	0.511
	SW	0.76	0.40	2.13	0.97	4.71	0.061
logOR		0.592	0.155				<0.001

b coefficient, S.E Standard Error, OR Odds ratio.
¹Wald test. ² Generalised score test. ³ NE (North-East), NW (North-West), SE (South-East), SW (South-West).

ISSN: 1297-9716