Table 3.

Simple linear regression analysis and multivariate adjustment of association of spinal anesthesia and efficiency outcomes

Variable	β	SE	95% CI		P-value
			Low	High
Operative time
Simple [7 missing]	−54.4	4.3	−62.9	−45.9	<0.001
Multivariate (final model) [7 missing]	−31.0	4.4	−39.7	−22.2	<0.001
Anesthesia time
Simple [11 missing]	−71.9	4.1	−81.8	−62.0	<0.001
Multivariate (final model) [30 missing]	−48.3	5.3	−58.7	−37.9	<0.001
Estimated blood loss
Simple [4 missing]	−114.3	13.9	−141.6	−86.9	<0.001
Multivariate (final model) [6 missing]	−80.2	15.1	−109.8	−68.6	<0.001
PACU time
Simple [11 missing]	61.6	6.7	48.3	74.8	<0.001
Multivariate (final model) [11 missing]	55.4	6.7	42.4	50.5	<0.001
Duration of hospital stay
Simple	−1.6	0.2	−1.9	−1.3	<0.001
Multivariate (final model) [2 missing]	−1.2	0.2	−1.5	−0.9	<0.001
OR time until incision
Simple [6 missing]	−8.5	1.3	−10.9	−6.0	<0.001
Multivariate (final model) [7 missing]	−6.1	1.4	−8.8	−3.3	<0.001
Bandage placed, time to leaving OR
Simple [12 missing]	−7.0	0.8	−8.6	−5.4	<0.001
Multivariate (final model) [13 missing]	−6.9	0.8	−8.4	−5.3	<0.001

Abbreviations: PACU, postanesthesia care unit; OR, operating room.