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Table 3 Random effects logistic regression for new products

From: Search depth, knowledge characteristics, and innovation performance

  1 2 3 4 5 6
Search depth   −0.02 (0.12) 0.58* (0.28) 0.70* (0.28) 0.34 (0.30) 0.46 (0.31)
Search depth squared    −0.25^ (0.14) −0.23^ (0.13) −0.27^ (0.14) −0.25^ (0.14)
Search depth × knowledge depth     −0.08* (0.04)   
Search depth × knowledge scope      1.08** (0.37)  
Search depth × technological opportunities       0.01 (0.01)
Knowledge depth 0.06** (0.02) 0.06** (0.02) 0.07** (0.02) 0.10*** (0.03) 0.07*** (0.02) 0.07** (0.02)
Knowledge scope 0.41^ (0.22) 0.40^ (0.22) 0.44^ (0.23) 0.39^ (0.23) 0.41^ (0.23) 0.44^ (0.23)
Technological opportunities 0.00 (0.01) 0.00 (0.01) 0.00 (0.01) 0.00 (0.01) 0.00 (0.01) 0.00 (0.01)
Year 1990 0.34 (0.28) 0.34 (0.28) 0.37 (0.28) 0.30 (0.28) 0.40 (0.28) 0.36 (0.28)
Year 1991 0.01 (0.29) 0.01 (0.29) 0.03 (0.29) −0.03 (0.29) 0.05 (0.29) 0.02 (0.29)
Year 1992 0.07 (0.28) 0.07 (0.28) 0.09 (0.28) 0.02 (0.28) 0.11 (0.28) 0.08 (0.28)
Year 1993 0.17 (0.28) 0.17 (0.28) 0.21 (0.28) 0.15 (0.28) 0.22 (0.28) 0.20 (0.28)
Year 1994 0.35 (0.26) 0.35 (0.26) 0.39 (0.26) 0.34 (0.26) 0.41 (0.26) 0.38 (0.26)
Year 1995 0.14 (0.27) 0.13 (0.27) 0.16 (0.27) 0.11 (0.27) 0.20 (0.27) 0.15 (0.27)
Year 1996 0.36 (0.26) 0.37 (0.26) 0.37 (0.25) 0.34 (0.25) 0.39 (0.25) 0.37 (0.25)
Year 1997 0.27 (0.26) 0.26 (0.26) 0.28 (0.26) 0.23 (0.26) 0.26 (0.26) 0.27 (0.26)
Year 1998 0.17 (0.26) 0.16 (0.26) 0.19 (0.26) 0.14 (0.26) 0.19 (0.26) 0.18 (0.25)
Year 1999 0.34^ (0.19) 0.34^ (0.19) 0.38* (0.19) 0.37^ (0.19) 0.39* (0.19) 0.37^ (0.19)
Diversification 0.18 (0.19) 0.20 (0.19) 0.22 (0.19) 0.18 (0.19) 0.20 (0.19) 0.20 (0.19)
Research size 0.00* (0.00) 0.00* (0.00) 0.00* (0.00) 0.00* (0.00) 0.00* (0.00) 0.00* (0.00)
Performance 0.35* (0.14) 0.35* (0.14) 0.34* (0.14) 0.36* (0.15) 0.31* (0.14) 0.34* (0.14)
Demand growth 0.02 (0.01) 0.02 (0.01) 0.02 (0.01) 0.02 (0.01) 0.02 (0.01) 0.02 (0.01)
Constant 0.34 (0.27) 0.33 (0.27) 0.03 (0.30) 0.09 (0.30) 0.02 (0.30) 0.04 (0.30)
Log likelihood −1,395.6 −1,395.1 −1,391.9 −1,389.5 −1,387.3 −1,391.5
Wald chi-square (df) 43.6 (17) 45.4 (18) 52.7 (19) 56.5 (20) 66.4 (20) 53.7 (20)
  1. Standard errors are shown in parentheses. There are 955 firm-year observations and 141 sampled firms for analysis. ^p < 0.10, *p < 0.05, **p < 0.01, ***p < 0.001.