Ecological momentary assessment combined with aromatherapy on postoperative depression in elderly patients with colostomy

Table 2 Comparison of perioperative parameters, mean ± SD

Group	n	Postoperative bowel sound recovery time (hours)	First exhaust time (hours)	Length of hospital stay (days)
Control group	50	17.23 ± 2.01	62.29 ± 3.23	18.83 ± 2.04
Observation group	50	17.18 ± 1.89	61.67 ± 3.07	14.61 ± 2.10
t		0.130	0.993	10.200
P value1		0.897	0.323	< 0.001

¹This table compares the continuous variables (postoperative bowel sound recovery time, first exhaust time, length of hospital stay) of the two groups of patients by t-test. The results show that there is no statistically significant difference in postoperative bowel sound recovery time and first exhaust time between the groups (P > 0.05), while there is a statistically significant difference in length of hospital stay (P < 0.001).