Table 6.3
Results of univariate logistic regressions
Independent variable
No.
Values
Is widely introduced
Is a crop weed
Is a ruderal weed
Is an environmental weed
Wald Chi Sq.
Pr >Chi Sq.
Odds ratio point est.
Wald Chi Sq.
Pr >Chi Sq.
Odds ratio point est.
Wald Chi Sq.
Pr >Chi Sq.
Odds ratio point est.
Wald Chi Sq.
Pr >Chi Sq.
Odds ratio point est.
Section
147
22.0715 <0.0001
40.069
<0.0001
38.9054 <0.0001
21.2555 <0.0001
Bromus
vs.
Bromopsis
21.250 (4.386–102.951)
36.037 (10.627–124.044)
28.699 (9.104–90.466)
10.5 (2.633–41.868)
Ceratochloa
vs.
Bromopsis
15.179 (2.679–86.006)
3.890 (0.794–10.069)
4.373 (1.051–18.189)
- 467 (1.516–36.783)
Genea
vs.
Bromopsis
127.5 (15.187–>999.999)
62.239 (9.414–411.481)
49.198 (7.834–308.977)
84 (11.696–603.298)
Bromus
vs.
Ceratochloa
1.400 (0.400–4.894)
9.333 (2.250–38.711)
6.562 (1.768–24.353)
1.406 (0.367–5.386)
Bromus
vs.
Genea
0.167 (0.029–0.965)
0.583 (0.101–3.358)
0.583 (0.101–3.358)
0.125 (0.021–0.737)
Ceratochloa
vs.
Genea
0.119 (0.018–0.795)
0.063 (0.008–0.471)
0.089 (0.013–0.621)
0.089 (0.013–0.621)
Early year
147
25.6954 <0.0001
1.042 (1.026–1.059)
30.1648 <0.0001
0.971 (0.961–0.982)
31.0694 <0.0001
0.971 (0.961–0.981)
24.5799 <0.0001
0.965 (0.952–0.979)