Table 2.
Association of alter unit inventory decrease and ego inventory decrease for infusion pump
| ED | OR | ICU | IMCU | Floor | L&D | |
|---|---|---|---|---|---|---|
| LVP | ||||||
| C-statistic | 0.52 | 0.62 | 0.57 | 0.61 | 0.62 | 0.52 |
| First degree | ||||||
| Positive | 0.96 (0.91-1.01) | 1.14 (1.09-1.19)c | 1.03 (0.94-1.11) | 1.08 (1.01-1.14)a | 1.11 (1.04-1.19)b | 0.94 (0.88-1.00) |
| Negative | 0.97 (0.92-1.02) | 1.06 (0.98-1.14) | 0.95 (0.89-1.02) | 1.04 (0.97-1.11) | 1.06 (0.99-1.14) | 1.01 (0.96-1.07) |
| Neutral | 1.00 (0.96-1.04) | 1.05(0.98-1.12) | 0.99 (0.93-1.04) | 1.14 (1.06-1.22)c | 1.02 (0.95-1.09) | 0.94 (0.85-1.04) |
| Second degree | ||||||
| Positive | 1.02 (0.94-1.11) | 1.16 (1.10-1.22)c | 1.07 (0.87-1.29) | 1.13 (1.05-1.18)b | 1.1 (0.97-1.23) | 1.02 (0.97-1.07) |
| Negative | 2.28 (0.02-42.93) | 0.97 (0.74-1.25) | 1.13 (1.09-1.17)c | 0.99 (0.87-1.12) | 1.01 (0.9-1.13) | 1.00 (0.96-1.04) |
| Neutral | 1.02 (0.91-1.12) | 1.09 (1.02-1.17)b | 1.04 (0.98-1.11) | 1.11 (1.05-1.18)c | 1.08 (1.01-1.15)a | 1.07 (0.93-1.23) |
| Third degree | ||||||
| Positive | NA | 1.31 (0.05-5.75) | 0.23 (0.01-1.72) | NA | NA | 1.83 (0.01-34.41) |
| Negative | NA | NA | 1.20 (0.86-1.61) | NA | NA | 0.95 (0.57-1.42) |
| Neutral | NA | NA | 0.42 (0.57-1.17) | NA | NA | NA |
| Occupancy | NA | NA | 0.99 (0.99-1.00) | 0.98(0.97-0.99)b | 0.96 (0.95-0.97)c | NA |
| PCU | ||||||
| C-statistic | 0.53 | 0.60 | 0.57 | 0.59 | 0.61 | 0.52 |
| First degree | ||||||
| Positive | 1.03 (0.97-1.09) | 1.10 (1.03-1.16)b | 1.03 (0.94-1.12) | 1.03 (0.93-1.12) | 1.02 (0.86-1.18) | 0.90 (0.82-0.99)a |
| Negative | 0.95 (0.89-1.02) | 1.17 (1.07-1.27)c | 0.95 (0.89-1.02) | 1.06 (0.98-1.15) | 1.14 (1.05-1.23)b | 0.96 (0.89-1.03) |
| Neutral | 1.00 (0.96-1.03) | 0.89 (0.79-1.00) | 0.99 (0.93-1.04) | 1.09 (1.02-1.17)a | 1.05 (0.97-1.12) | 0.99 (0.91-1.08) |
| Second degree | ||||||
| Positive | 1.01 (0.85-1.16) | 1.15 (1.10-1.19)c | 1.07 (0.87-1.29) | 1.13 (0.81-1.47) | 1.01 (0.87-1.16) | 0.99 (0.92-1.05) |
| Negative | 0.92 (0.62-1.29) | 1.02 (0.92-1.11) | 1.13 (1.09-1.18)c | 1.05 (0.92-1.17) | 1.10 (0.96-1.23) | 1.01 (0.96-1.06) |
| Neutral | 0.95 (0.84-1.06) | 0.97 (0.88-1.06) | 1.04 (0.98-1.11) | 1.14 (1.08-1.20)c | 1.06 (1.00-1.12)a | 0.98 (0.93-1.03) |
| Third degree | ||||||
| Positive | 1.54 (0.01-18.9) | 1.18 (0.89-1.53) | 0.23 (0.01-1.72) | NA | 4.04 (0.03-51.07) | 1.14 (0.87-1.47) |
| Negative | 0.83 (0.01-7.82) | 2.69 (0.67-8.42) | 1.2 (0.86-1.61) | NA | NA | 0.91 (0.10-3.79) |
| Neutral | NA | 0.81 (0.01-7.73) | 0.42 (0.06-1.17) | 1.15 (0.77-1.60) | 1.10 (0.66-1.65) | 0.97 (0.57-1.48) |
| Occupancy | NA | NA | 0.99 (0.99-1.00) | 0.99 (0.98-1.00) | 0.96 (0.94-0.97)c | NA |
Values are odds ratio (95% confidence interval), unless otherwise indicated.
Without loss of generality, these are the results for a sample of hospital units, whereas the Network Effects of Alters Across All Hospital Units section of the Supplementary Appendix presents the results for the whole hospital. In sensitivity analysis, we found that the odds ratio presented here are robust to the exclusion of hospital areas with no bed occupancy such as basements and hallways (see the Network Effects of Alters With or Without Bed Occupancy section of the Supplementary Appendix), to a more restrictive definition of positive, negative, and neutral sharing relationships (see the Network Effects of Alters With Narrower Relationship Threshold section of the Supplementary Appendix).
ED: emergency department; ICU: intensive care unit; IMCU: intermediate care unit; L&D: labor and delivery; LVP, large-volume pump; NA: not applicable; OR: operating room; PCU: PC unit.
Statistically significant at 5%.
Statistically significant at 1%.
Statistically significant at 0.1%.