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Table 8 Statistics for the fixed-effects models (best in boldface, worst in italics )

From: Evaluation of different approaches to individual tree growth and survival modelling using data collected at irregular intervals – a case study for Pinus patula in Kenya

  Modelling and simulation approach
Regression 1 Regression 2 Regression 2 Optimization
1-year step 1-year step true step 1-year step
Basal area     
- bias (m2 · ha–1) 1.74 10.04 9.24 0.28
- RMSE (m2 · ha–1) 4.24 22.73 20.49 2.73
Number of trees per hectare    
- bias –23.92 49.74 49.74 0.39
- RMSE 76.21 135.94 135.94 46.75
Annual basal area increment    
- bias (m2 · ha–1) 0.579 1.611 1.497 0.005
- bias (%) 43.21 120.22 111.71 0.37
- RMSE (m2 · ha–1) 1.251 3.175 2.971 0.868