Effects of laparoscopic cholecystectomy on lung function: A systematic review

Table 6 Forced expiratory volume in one second (L/s) sensitivity results

Study	SMD	95%CI		Weight
LC
Putensen-Himmer et al[22]	-0.796	-1.710-(0.118)		3.1%
Mealy et al[23]	-1.090	-2.036-(-0.143)		2.9%
1Karayiannakis et al[26]	-0.706	-1.147-(-0.265)		13.4%
Hendolin et al[27]	-0.920	-1.504-(-0.336)		7.6%
Hasukić et al[28]	-1.000	-1.538-(-0.462)		9.0%
Mimica et al[33]	-1.463	-1.906-(-1.021)		13.3%
Freeman et al[48]	-0.913	-1.535-(-0.290)		6.7%
1Bablekos et al[29]	-1.045	-1.744-(-0.346)		5.3%
Mimica et al[36]	-1.463	-1.906-(-1.021)		13.3%
Hasukić et al[46]	-1.000	-1.538-(-0.462)		9.0%
Kimberley et al[39]	-1.167	-1.725-(-0.608)		8.3%
1Rovina et al[49]	-0.794	-1.360-(-0.229)		8.1%
Sub-total
I-V pooled SMD	-1.068	-1.229-(-0.907)		100.0%
D + L pooled SMD	-1.068	-1.229-(-0.907)
OC
Putensen-Himmer et al[22]	-1.540	-2.550-(-0.529)		5.0%
1Karayiannakis et al[26]	-1.756	-2.273-(-1.238)		19.2%
Hendolin et al[27]	-1.980	-2.707-(-1.253)		9.7%
Hasukić et al[28]	-2.078	-2.732-(-1.424)		12.0%
Mimica et al[33]	-2.500	-3.026-(-1.974)		18.6%
1Bablekos et al[29]	-1.286	-2.257-(-0.314)		5.4%
Mimica et al[36]	-2.500	-3.026-(-1.974)		18.6%
Kimberley et al[39]	-5.099	-8.978-(-1.220)		0.3%
1Rovina et al[49]	-1.964	-2.644-(-1.285)		11.1%
Sub-total
I-V pooled SMD	-2.091	-2.318-(-1.865)		100.0%
D + L pooled SMD	-2.059	-2.359-(-1.760)
Overall
I-V pooled SMD	-1.412	-1.543-(-1.280)
D + L pooled SMD	-1.422	-1.688-(-1.156)
Test(s) of heterogeneity
	Heterogeneity statistic	Degrees of freedom	P value	I2
LC	10.70	11	0.468	0.0%
OC	12.58	8	0.127	36.4%
Overall	75.31	20	< 0.001	73.4%

¹48 h. LC: Laparoscopic cholecystectomy; OC: Open cholecystectomy; SMD: Standardized mean difference.