Case review analysis of operating room decisions to cancel surgery

BMC Surgery

Table 4 Differences in patient demographics and characteristics between patients with surgery cancelled before and after anesthesia (n = 244)

Variables	Total	Surgery cancelled after anesthesia	Surgery cancelled before anesthesia	p-value
Variables	(n = 244)	(n = 31)	(n = 213)	p-value
Age
mean ± SD	57.4 ± 22.8	56.2 ± 25.3	57.6 ± 22.5	0.974
(minimum, maximum)	(1 to 96)	(1 to 85)	(1 to 96)
Sex				0.093
Male	131 (53.7%)	21 (67.7%)	110 (51.6%)
Female	113 (46.3%)	10 (32.3%)	103 (48.4%)
ASA physical status				0.21
1	19 (7.8%)	2 (6.5%)	17 (8.0%)
2	94 (38.5%)	11 (35.5%)	83 (39.0%)
3	112 (45.9%)	13 (41.9%)	99 (46.5%)
4	15 (6.1%)	3 (9.7%)	12 (5.6%)
5	4 (1.6%)	2 (6.5%)	2 (0.9)
Cause of surgery cancellation				<.001^*
Inadequate NPO before anesthesia	11 (4.5%)	0 (0%)	11 (5.2%)
Medical reason	148 (60.7%)	16 (51.6%)	132 (62.0%)
Surgical reason	22 (9.0%)	7 (22.6%)	15 (7.0%)
System reason	4 (1.6%)	2 (6.5%)	2 (0.9%)
Airway issue	5 (2.0%)	2 (6.5%)	3 (1.4%)
Family issue	23 (9.4%)	4 (13.0%)	19 (8.9%)
Incomplete evaluation	31 (12.7%)	0 (0%)	31 (14.6%)
Follow-up procedure				0.555
Received operation at a later time	161 (66.0%)	19 (61.3%)	253 (66.7%)
Did not receive operation	83 (34.0%)	12 (38.7%)	71 (33.3%)

Data are presented as mean ± SD with range (minimum, maximum) for age and n(%) for other variables by patients with or without cancelling surgery after anesthesia.
Difference between groups were compared using Mann–Whitney U test for age due to age was not normally distributed; and Pearson Chi-sqaure test or Fisher’s exact if cell numbers less than five for other categorical variables.
^*P < 0.05, indicates significantly different between groups.

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