Table 2. Comparison of Mean Anxiety Visual Analogue Scale Scores Between the Two Groups in Different Anesthesia Stages.

	Experimental Group , Nitrous Oxide	Control Group ,Oxygen	P Value
Spinal injection	5.54	5.57	0.211
Skin incision	2.50	5.18	0.001
Childbirth	0.59	2.93	0.001
Operation termination	0.41	1.43	0.028
Recovery	0.44	0.50	0.840