Table 3.

Comparison of index of consciousness among groups

Item	Time point	Group R2	Group R4	Group R6	P value
IOC1	T0	98.0 ± 1.5	98.1 ± 1.3	97.7 ± 1.3	0.371
	T1	47.5 ± 6.9&&	43.6 ± 9.5&&*	38.5 ± 7.27&&**##	0.000
	T2	49.7 ± 7.1&&	46.7 ± 8.8&&	42.0 ± 6.1&&**##	0.000
	T3	54.3 ± 9.0&&	53.2 ± 8.3&&	49.8 ± 7.9&&*	0.046
	T4	95.8 ± 4.5&	97.7 ± 1.4**	97.5 ± 1.5**	0.006
IOC2	T0	97.8 ± 1.9&&	97.8 ± 1.5	98.0 ± 1.2	0.753
	T1	47.2 ± 7.9&&	32.9 ± 9.5&&**	26.6 ± 7.4&&**##	0.000
	T2	53.0 ± 11.5&&	37.1 ± 11.5&&**	34.2 ± 8.5&&**	0.000
	T3	59.6 ± 16.1&&	46.0 ± 14.3&&**	45.6 ± 11.5&&**	0.000
	T4	98.2 ± 1.1	98.0 ± 0.9	97.8 ± 1.4	0.274

Compared with group T₀, ^&P <0.05, ^&&P <0.01; compared with group R2, ^*P <0.05, ^**P <0.01; compared with group R4, ^#P <0.05, ^##P <0.01

Abbreviations: IOC₁ index of consciousness 1, IOC₂ index of consciousness 2