Table 2.
Nursing intensity scores in different ASA categories.
| Phase | ASA I (n = 327) Mean/median (IQR) Min–max |
ASA II (n = 273) Mean/median (IQR) Min–max |
ASA III (n = 171) Mean/median (IQR) Min–max |
ASA IV (n = 85) Mean/median (IQR) Min–max |
p value∗ |
|---|---|---|---|---|---|
| Pre phase | 6.8/6.0 | 7.2/7.0 | 8.2/8.0 | 12.3/12.5 | <0.0001 |
| (6.0–7.0) | (6.0–8.0) | (6.0–10.0) | (12.0–13.0) | ||
| 6–11 | 6–12 | 6–13 | 8–16 | ||
| n = 153 | n = 81 | n = 17 | n = 6 | ||
|
| |||||
| Intra phase | 9.9/10.0 | 10.4/10.0 | 12.1/12.0 | 16.1/17.0 | <0.0001 |
| (8.0–11.0) | (8.0–12.0) | (9.0–15.0) | (14.0–19.0) | ||
| 6–20 | 6–22 | 6–22 | 7–24 | ||
| n = 317 | n = 267 | n = 166 | n = 78 | ||
|
| |||||
| Post phase | 8.4/8.0 | 8.5/8.0 | 9.6/9.0 | 11.1/10.0 | <0.0001 |
| (7.0–10.0) | (7.0–10.0) | (7.0–12.0) | (9.0–14.0) | ||
| 6–20 | 6–15 | 6–18 | 6–19 | ||
| n = 268 | n = 200 | n = 104 | n = 21 | ||
IQR = interquartile range; ∗Kruskal-Wallis test; significant differences in pairwise comparisons between ASA categories with Mann–Whitney U tests using Bonferroni-corrected p values: In pre phase I versus III (p = 0.023), I versus IV (p < 0.0001), II versus IV (p = 0.0006), and III versus IV (p = 0.034); in intra phase I versus III (p < 0.0001), I versus IV (p < 0.0001), II versus III (p < 0.0001), II versus IV (p < 0.0001), andn III versus IV (p < 0.0001); in post phase I versus III (p < 0.0001), I versus IV (p = 0.002), II versus III (p = 0.004), and II versus IV (p = 0.005). Three patients in ASA category V were excluded from the analysis. ASA category VI did not appear in our data.