Table 1

The correct primary dichotomous outcomes for both the full cohort and each of the gestational age groups

	Outcome	CPAP+Nebulised surfactant	CPAP	χ²	RR	95 % CI
Full Cohort	Intubated	13	22	5.107	0.567	0.342, 0.940
Full Cohort	Not Intubated	19	10	5.107	0.567	0.342, 0.940
29⁰–31⁶ w GA	Intubated	12	12	0.150	0.889	0.493, 1.602
29⁰–31⁶ w GA	Not Intubated	9	7	0.150	0.889	0.493, 1.602
32⁰–33⁶ w GA	Intubated	1	10	11.043	0.118	0.018, 0.784
32⁰–33⁶ w GA	Not Intubated	10	3	11.043	0.118	0.018, 0.784