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Table 5 (b) Linear mixed model on the annual basal area increment (mm2·yr.−1) of all analyzed trees (response variable) with the individual tree code as random effect and fixed effects logarithmized age related to the growing site (urban and rural), SD: Standard deviation, AIC: Akaike Information Criterion

From: Effects of the urban heat island and climate change on the growth of Khaya senegalensis in Hanoi, Vietnam

Parameter Fixed effect Value ± SE p
a Intercept −6.92 ± 0.08 <  0.001
log(ageij) Age 1.59 ± 0.02 <  0.001
urbanity grade ij Grade of urbanity 1.68 ± 0.10 <  0.001
b x urbanity gradeij x log(ageij) Age x Grade of urbanity −0.48 ± 0.02 <  0.001
Random effect dij 0.52
ε 0.17
AIC − 2356.13
  1. Levels of Urbanity: 2 (Urban and Rural)