Table 7. Comparison of oxygen saturation level between the groups in study population.

Group	No. of cases	Min	Max	Mean	SD
Group S	110	70	100	95.75	6.09
Group C	110	68	100	92.88	7.94
Total	220	68	100	94.31	7.20
t=3.001 (Student t-test); p=0.003