[td]
Variables in the Equation | |||||||
| | B | S.E. | Wald | df | Sig. | Exp(B) |
Step 1a | 自变量 | .553 | .167 | 10.943 | 1 | .001 | 1.738 |
调节变量 | -1.624 | .324 | 25.162 | 1 | .000 | .197 | |
Constant | -1.169 | 2.314 | .255 | 1 | .613 | .311 | |
a. Variable(s) entered on step 1: 调节变量. |
但是,当将交互项也放进去之后,结果却变成了这样,就不显著了:
[td]
Variables in the Equation | |||||||
| | B | S.E. | Wald | df | Sig. | Exp(B) |
Step 1a | 自变量 | 1.156 | .501 | 5.334 | 1 | .021 | 3.178 |
调节变量 | .691 | 1.571 | .194 | 1 | .660 | 1.996 | |
交互项 | -.156 | .110 | 2.014 | 1 | .156 | .855 | |
Constant | -10.034 | 7.116 | 1.988 | 1 | .159 | .000 | |
a. Variable(s) entered on step 1: 交互项. |
另外,如果在分析时,不放入调节变量,只放自变量和交互项,结果就是显著的:
[td]
Variables in the Equation | |||||||
| | B | S.E. | Wald | df | Sig. | Exp(B) |
Step 1a | 自变量 | .967 | .205 | 22.198 | 1 | .000 | 2.631 |
交互项 | -.110 | .023 | 22.087 | 1 | .000 | .896 | |
Constant | -7.234 | 2.390 | 9.160 | 1 | .002 | .001 | |
a. Variable(s) entered on step 1: 交互项. |
非常疑惑,这种情况是怎么回事呢?求高手给解释一下,是不是 因为调节变量本身对因变量也有显著影响?另外,在做调节效应时,是否可以不放入调节变量,只放自变量与交互项?