A Systems View Across Time and Space
Table 5 Hierarchical regression - non-family firms (dependent variable: performance)
Variables | Model 1 | Model 2 | Model 3 | Model 4 | ||||
|---|---|---|---|---|---|---|---|---|
β | t | β | t | β | t | β | t | |
Control variables | Â | Â | Â | Â | Â | Â | Â | Â |
 Age | 0.13 | 1.55 | 0.14 | 1.59 | 0.05 | 0.63 | 0.05 | 0.58 |
 Size |  |  | −0.03 | −0.38 | 0.02 | 0.18 | 0.00 | 0.05 |
Independent variables | Â | Â | Â | Â | Â | Â | Â | Â |
 Knowledge |  |  |  |  | 0.41 | 5.14*** | 0.11 | 0.88 |
 Innovation |  |  |  |  |  |  | 0.40 | 3.35*** |
Adjusted R2 | 0.01 | 0.00 | 0.16 | 0.22 | ||||
F value | 2.41 | 1.27 | 9.80*** | 10.72*** | ||||
Delta R2 | Â | 0.00 | 0.16 | 0.06 | ||||