Table 9.

Variable statistics.

Variable	Mean	Std. Dev.	Min	Max	VIF
(1) RAccept	0.317	0.444	0	0.998	/
(2) RSAutho	3.771	0.926	1	5	2.81
(3) RSInflu	41,791,016	36,173,742	104	119,089,319	2.73
(4) RIRead	−0.709	0.772	−3.874	11.570	1.34
(5) RAQuali	1.439	0.553	0	2	1.44
(6) CUCog	−1.082	0.417	−2.589	0	1.13
(7) CUGen	0.622	0.485	0	1	1.03
(8) CURegTime	205,105,842	88,789,950	6,780,371	338,833,382	1.04
(9) Category	1.443	0.672	1	3	1.43a
					1.33b
(10) Involve	1.340	1.183	1	13	1.02

Note: a. the number of observations in the final regression model was 4277. b. Category = 2: 1.43^a; Category = 3: 1.33^b.