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Table 7 The recalled Arabic numbers at different time points in four groups

From: Effects of dexmedetomidine combined with etomidate on postoperative cognitive function in older patients undergoing total intravenous anaesthesia: a randomized, double-blind, controlled trial

Time points

EN1 group

n=34

ED1 group

n=31

EN2 group

n=32

ED2 group

n=35

F values

P values

t0

4.8±0.4

4.7±0.5

4.6±.0.5

4.6±0.7

1165

0.326

t1

2.4±0.7*$

2.6±0.7*$

1.6±0.6*#&

2.3±0.6*$&

25.639

0.000

t2

3.1±0.8*$

3.4±0.7*$

2.4±0.5*#&

3.1±0.9*$&

23.262

0.000

t3

4.2±0.8*$

4.4±0.8$

3.4±0.8*#&

4.2±0.8$

1.391

0.248

t4

4.5±0.7

4.5±0.5

4.4±0.7

4.3±0.7

0.633

0.594

t5

4.6±0.5

4.5±0.6

4.6±0.5

4.4±0.7

2.199

0.091

F values

70.829

48.195

123.069

59.942

—

—

P values

0.000

0.000

0.000

0.000

—

—

  1. EN1 Etomidate-remifentanil with duration of surgery less than 60min, ED1 Etomidate-remifentanil and dexmedetomidine with duration of surgery less than 60min, EN2 Etomidate-remifentanil with duration of surgery more than 60min, ED2 Etomidate-remifentanil and dexmedetomidine with duration of surgery more than 60min. t0 30 minutes before anesthesia, t1 3h after surgery, t2 8h after surgery, t3 24h after surgery, t4 48h hours after surgery and t5 72h after surgery. *p < 0.05 vs.t0, #p < 0.05 vs.EN1, $p < 0.05 vs.EN2 and &p < 0.05 vs.ED1