Table 3. Subgroup Analysis of Successful Attempts.

Outcomes	Group 1, n = 40		Group 2, n = 40	Relative risk, (95% CI)	P value
Age 6 months to 5 years (n = 57)
First attempt successful ETI		8/31 (25.8%)	14/26 (53.8%)	1.81 (0.98 to 3.30)	0.030†
Overall Success rate of ETI		14/31 (45.2%)	19/26 (73%)	1.67 (1.04 to 2.68)	0.033†
Age >5 years to 10 years (n = 23)
First attempt successful ETI		5/9 (55.5%)	8/14 (57.1%)	1.04 (0.37 to 2.90)	0.940†
Overall success rate of ETI		7/9 (77.7%)	12/14 (85.7%)	1.36 (0.43 to 4.26)	0.624†

Values are presented as frequency (percentage). P < 0.05 = Significant; ^†:chi square test

CI, confidence interval; ETI, endotracheal intubation