. 2017 Mar 3;7:42722. doi: 10.1038/srep42722

Table 3. Univariate analysis of risk factors for contamination of LBMs.

Characteristic	N	A			H5			H7			H9
Characteristic	N	Mean rank	Z/x²	P	Mean rank	Z/x²	P	Mean rank	Z/x²	P	Mean rank	Z/x²	P
Running days
0–	197	128.4	−0.616	0.538	135.49	−2.677	0.007	130.92	−0.386	0.7	129.3	−0.276	0.783
11–	62	135.09	−0.616	0.538	112.55	−2.677	0.007	127.08	−0.386	0.7	132.22	−0.276	0.783
Duration of sales per day (h)
0–	102	132.13	−2.075	0.038	140.44	−1.057	0.29	138	−1.298	0.194	141.14	−0.746	0.456
8–	189	153.49	−2.075	0.038	149	−1.057	0.29	150.32	−1.298	0.194	148.62	−0.746	0.456
Market trading area (m³)
0–	81	129.78	2.553	0.279	123.72	11.983	0.003	137.52	0.811	0.667	131.04	2.08	0.353
25–	130	143.02			141.67			145.32			147.15
100–	70	150.24			159.75			137.01			141.1
Number of live poultry
0–	84	132.63	2.958	0.228	141.17	5.468	0.065	143.17	1.688	0.43	138.53	2.055	0.358
30–	122	147.02			137.23			149.79			141.43
100–	71	153.87			159.37			135.15			155.66
Types of live poultry
1	60	126.44	−1.851	0.064	126.79	−2.305	0.021	128.47	−1.783	0.075	139.43	−0.495	0.621
2–	227	148.64	−1.851	0.064	148.55	−2.305	0.021	148.11	−1.783	0.075	145.21	−0.495	0.621
LBM location
urban	102	153.29	−1.09	0.276	147.34	−0.254	0.799	129.19	−2.727	0.006	142.11	−0.598	0.55
rural	189	142.07	−1.09	0.276	145.28	−0.254	0.799	155.07	−2.727	0.006	148.1	−0.598	0.55
LBM structure
enclosed	137	140.96	−0.976	0.333	142.07	−0.963	0.335	145.53	−0.099	0.921	143.85	−0.423	0.672
open	154	150.48	−0.976	0.333	149.49	−0.963	0.335	146.42	−0.099	0.921	147.91	−0.423	0.672
Sales region structure
Near other region	168	146.88	−0.208	0.835	151.53	−1.674	0.094	142.47	−0.912	0.362	147.72	−0.42	0.675
Independent	123	144.8	−0.208	0.835	138.44	−1.674	0.094	150.83	−0.912	0.362	143.65	−0.42	0.675
Rest days, disinfection and cleaning
no	90	136.08	−0.768	0.442	125.08	−2.963	0.003	130.73	−1.66	0.097	138.72	−0.404	0.686
yes	192	144.04	−0.768	0.442	149.2	−2.963	0.003	146.55	−1.66	0.097	142.8	−0.404	0.686
How live poultry were slaughtered
Slaughtered	40	150.32	1.076	0.584	143.6	3.388	0.184	131.21	1.37	0.504	142.06	1.746	0.418
Slaughtered in enclosed areas	131	137.7			135.81			142.74			136.88
Slaughtered in open areas	114	146.52			151.06			147.43			150.36
LBM sanitary conditions
poor	45	159.96	7.448	0.024	142.17	0.034	0.983	158.57	6.139	0.046	152.16	3.368	0.186
average	201	145.88			143.95			145.07			145.71
well	40	113.03			142.76			118.65			122.65
Live poultry source
Local areas	196	143.33	0.437	0.804	146.19	1.16	0.56	142.2	1.24	0.538	143.02	4.444	0.108
Other districts in Zhejiang	90	149.73			142.58			151.79			154.15
Other provinces	4	156.75			177.39			165.88			72.38
Residual live poultry management
Slaughtered	9	109.78	3.234	0.199	150.56	0.07	0.966	134.11	1.249	0.535	150.94	0.282	0.869
Stayed in LBMs	170	151.63			144.96			149.65			147.24
Taken back and fed	111	139.01			145.92			140.07			142.39