Table 2 Intubation and surfactant administration for infants born at less than 29 weeks gestation.

	Period 1	Period 2	% increase (95% CI)
Born <29 weeks gestation	187	212
Intubated at birth	104 of 186 (56%) missing = 1	130 of 212 (61%)
Intubated and received surfactant	68 of 104 (65%)	121 of 129 (94%) missing = 1	29% (18 to 39)
Intubated and received surfactant within 1 h of birth	11 of 68 (16%)	86 of 104 (83%) missing = 17	67% (55 to 78)