Identifying neuropathic pain and the effects of perioperative psychological intervention in patients with gastric cancer

Table 4 Comparison of pain intensity and pain characteristics, mean ± SD

Group	n	Effective number of presses for intravenous patient-controlled analgesia (times/72 hours)	Morphine equivalent (mg)	First time getting out of bed (hours)	Initial venting time (hours)	Quality of Recovery-15	Length of hospital stay (days)
Observation	50	15.24 ± 4.36	24.58 ± 6.81	25.54 ± 2.07	68.24 ± 4.06	128.54 ± 12.35	9.26 ± 1.85
Control	50	22.83 ± 5.67	38.23 ± 9.46	32.06 ± 3.11	76.84 ± 5.19	102.75 ± 14.83	10.54 ± 2.30
t		7.502	8.281	12.348	9.227	9.447	3.069
P value		< 0.001	< 0.001	< 0.001	< 0.001	< 0.001	0.003