Reliability of environmental sampling culture results using the negative binomial intraclass correlation coefficient

Aly, Sharif S; Zhao, Jianyang; Li, Ben; Jiang, Jiming

doi:10.1186/2193-1801-3-40

SpringerPlus

Table 2 Point estimate (PE) relative bias, variance, and mean square error (MSE) of Intraclass Correlation Coefficient (ICC) for culture results of samples collected by 2 veterinarians and based on the negative binomial mixed model, linear mixed model with raw data, square-root transformed data and log-transformed data (bold values are nearest to zero within a row)

From: Reliability of environmental sampling culture results using the negative binomial intraclass correlation coefficient

Scenario	Parameter	Negative binomial	Transformed data
			Raw	Natural logarithm	Square root
1	PE relative bias%	-10.35	-16.14	-5.41	-5.32
	Variance	0.0098	0.0138	0.0145	0.0137
	MSE	0.011	0.0168	0.0148	0.014
2	PE relative bias%	-10.8	-17.21	-1.13	-2.55
	Variance	0.0108	0.0136	0.0198	0.0183
	MSE	0.0126	0.0181	0.0198	0.0184
3	PE relative bias%	-5.33	-7.65	8.45	12.43
	Variance	0.0052	0.0118	0.0115	0.012
	MSE	0.0056	0.0126	0.0124	0.014
4	PE relative bias%	-9.3	-16.93	9.75	9.7
	Variance	0.0067	0.0107	0.0205	0.0152
	MSE	0.0081	0.0153	0.022	0.0167
5	PE relative bias%	-8.28	-18.37	-10.46	-10.92
	Variance	0.0114	0.0135	0.0133	0.0136
	MSE	0.0129	0.0207	0.0156	0.0161
6	PE relative bias%	-19.51	-30.33	-21.06	-22.33
	Variance	0.0148	0.0138	0.0162	0.0161
	MSE	0.0254	0.0394	0.0285	0.03
7	PE relative bias%	-8.02	-14.27	0.41	2.54
	Variance	0.0095	0.012	0.0158	0.0122
	MSE	0.0112	0.0172	0.0158	0.0124
8	PE relative bias%	-5.89	-15.66	9.03	7.11
	Variance	0.009	0.0107	0.016	0.0131
	MSE	0.01	0.0181	0.0185	0.0146
9	PE relative bias%	17.53	3.26	27.01	26.74
	Variance	0.0129	0.0105	0.0126	0.0118
	MSE	0.0144	0.0106	0.0162	0.0154
10	PE relative bias%	8.55	-0.51	31.12	27.35
	Variance	0.0165	0.0145	0.025	0.0225
	MSE	0.017	0.0145	0.0314	0.0275
11	PE relative bias%	30.36	27.17	62.05	66.58
	Variance	0.0104	0.0134	0.0144	0.015
	MSE	0.0154	0.0174	0.0351	0.0388
12	PE relative bias%	19.56	16.28	57.01	55.29
	Variance	0.0118	0.0157	0.0193	0.0183
	MSE	0.0144	0.0175	0.0416	0.0392
13	PE relative bias%	13.24	7.84	18.41	18.51
	Variance	0.0213	0.0185	0.0176	0.0183
	MSE	0.0229	0.0191	0.0207	0.0215
14	PE relative bias%	7.22	-2.79	17.15	15.39
	Variance	0.0217	0.0172	0.027	0.0255
	MSE	0.0223	0.0173	0.0306	0.0284
15	PE relative bias%	28.41	23.59	45.99	48.25
	Variance	0.0154	0.0182	0.0178	0.0188
	MSE	0.0236	0.0239	0.0394	0.0425
16	PE relative bias%	22.69	19.99	51.97	50
	Variance	0.0216	0.0205	0.0262	0.023
	MSE	0.0281	0.0256	0.0604	0.0546

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