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Table 2 Characteristics before and after propensity-score matching in groups M and A

From: Usefulness of discharge standards in outpatients undergoing sedative endoscopy: a propensity score-matched study of the modified post-anesthetic discharge scoring system and the modified Aldrete score

Before propensity-score matching

 

group M (%)

group A (%)

P value

Standardized difference

Number of patients (N)

181

195

  

 Age (years)

64.2 ± 14.3

62.8 ± 15.7

0.38

0.09

 Sex, male

53 (29.3%)

85 (43.6%)

 < 0.01

0.30

 ASA-PS classification, I

170 (93.9%)

192 (98.5%)

0.03

0.24

 Malignant diseases

54 (29.8%)

83 (42.6%)

0.01

0.27

 Procedure time (min)

15.8 ± 7.7

20.0 ± 11.6

 < 0.01

0.43

 Mean midazolam dose (mg)

4.7 ± 1.6

4.0 ± 1.5

 < 0.01

0.45

 Using analgesic agent

57 (31.5%)

37 (19.0%)

0.01

0.29

After propensity-score matching

 

group M (%)

group A (%)

P value

Standardized difference

Number of patients (N)

120

120

  

 Age (years)

63.4 ± 15.2

62.7 ± 15.6

0.76

0.05

 Sex, male

42 (35.0%)

35 (29.2%)

0.41

0.12

 ASA-PS classification, I

117 (97.5%)

117 (97.5%)

1.00

0.00

 Malignant diseases

43 (35.8%)

39 (32.5%)

0.68

0.07

 Procedure time (min)

17.0 ± 8.0

16.8 ± 8.6

0.81

0.02

 Mean midazolam dose (mg)

4.4 ± 1.6

4.3 ± 1.7

0.67

0.06

 Using analgesic agent

29 (24.2%)

23 (19.2%)

0.43

0.12

  1. Results are presented as the number of patients or mean ± standard deviation. ASA-PS: American Society of Anesthesiologists physical status, group M: discharge standard using the modified post-anesthetic discharge scoring system, group A: discharge standard using the modified Aldrete score