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Table 5 (a) 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 factor time of growth (period before 1960 and period since 1960), 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 − 5.40 ± 0.14 <  0.001
log(ageij) Age 1.16 ± 0.04 <  0.001
time of growth ij Time of growth −0.34 ± 0.13 0.01
b x time of growthij x log(ageij) Age x Time of growth 0.07 ± 0.04 0.06
Random effect dij 0.47
ε 0.19
AIC − 1664.82
  1. Levels of Time of growth: 2 (Before 1960 and Since 1960)