Table 2.

Multivariable logistic regression model of risk of unplanned extubation

Covariate	Odds ratio [95% confidence intervals]	p-Value
Chronological agea		<0.01b
0–7 d	0.5 [0.17, 1.47]
7–28 d	1.36 [1.06, 1.75]
> 28 d	1.06 [1.0, 1.14]
Birth weightc		0.07b
< 1,500 g	1.51 [0.96, 2.38]
1,500–2,500 g	0.76 [0.28, 2.04]
> 2,500 g	0.76 [0.53, 1.07]
Postmenstrual aged	0.92 [0.6, 1.41]	0.69

^aOdds change for a 7-day change in chronological age.

^bp-Value for the entire covariate.

^cOdds change for a 500-g change in birth weight.

^dOdds change for a 50-day change in postmenstrual age.