Table 3.
Adjusted Geometric Mean Length of Stay
| Exposures | Coefficient (SE) | Length of Stay, d, Geometric Mean (95% CI)a |
P Value |
|---|---|---|---|
| Invasive device percentage | |||
| None | −0.296 (0.059) |  |
<.001 |
| >0 to 35 | −0.205 (0.055) | ||
| >35 to 60 | −0.179 (0.058) | ||
| >60 | 1 [Reference] | ||
| Suctioning lapses | |||
| 0 | −0.491 (0.080) |  |
<.001 |
| 1 | −0.432 (0.070) | ||
| 2 | −0.236 (0.070) | ||
| 3 or 4 | 1 [Reference] | ||
| Covariates | |||
| Sex | |||
| Female | 0.001 (0.042) |  |
.97 |
| Male | 1 [Reference] | ||
| Age, mo | −0.020 (0.008) | … | .01 |
| Medicaid | |||
| Yes | 0.062 (0.043) |  |
.15 |
| No | 1 [Reference] | ||
| Department | |||
| Academic unit B | −0.068 (0.068) |  |
.02 |
| Academic unit A | −0.134 (0.062) | ||
| Satellite unit | −0.218 (0.076) | ||
| Other academic | 1 [Reference] | ||
| Ill before admission, d | |||
| <2 | 0.036 (0.087) |  |
.80 |
| 2 to <3 | −0.017 (0.054) | ||
| 3 to <4 | −0.053 (0.057) | ||
| 4 to <5 | −0.049 (0.065) | ||
| ≥5 | 1 [Reference] | ||
| Intravenous fluid bolus | |||
| <20 mL/kg | −0.052 (0.075) |  |
.49 |
| ≥20 mL/kg | 1 [Reference] | ||
| Any O2 within first 24 h | |||
| Yes | 0.239 (0.043) |  |
<.001 |
| No | 1 [Reference] | ||
| Temperature >38°C in first 24 h | |||
| Yes | 0.040 (0.041) |  |
.34 |
| No | 1 [Reference] | ||
| β-Agonists, No. of doses | |||
| 0 | −0.083 (0.058) |  |
.01 |
| 1 | −0.168 (0.057) | ||
| ≥2 | 1 [Reference] | ||
| Total No. of suctioning events | 0.076 (0.008) | <.001 |
a
Exponential of the estimated marginal means (least squares means). Geometric means with different superscript capital letters are statistically different at P < .05.