highly significantP < 0.001
When the parameter numbers between two models differed by 1, if ΔOFV >3.84, there was a significant difference ( P < 0.05); if ΔOFV >10.83, there was a highly significant difference ( P < 0.001).
When the parameter numbers between two models differed by 1, if ΔOFV >3.84, there was a significant difference ( P < 0.05); if ΔOFV >10.83, there was a highly significant difference ( P < 0.001).