Table 3.

Incidence and intensity of shoudler pain between different BMI patients. Values are presented as mean ± standard deviation or number. There was no significant difference between BMI < 18.5 Group and 18.5 ≤ BMI < 23 group. There was significant difference between the other two groups (p < 0.05).

BMI	Absence shoulder pain (n = 206)	Mild shoulder pain (n = 78)	Moderate to intense shoulder pain (n = 108)	The highest VAS score (72 h after operation)
BMI < 18.5 (n = 25)	6	5	14	4.76 ± 1.35
18.5 ≤ BMI < 23 (n = 164)	64	26	74	4.94 ± 1.46
23 ≤ BMI < 30 (n = 165)	103	43	19	3.71 ± 1.48
BMI ≥ 30 (n = 38)	33	4	1	3.15 ± 1.51