Table 3.
Distribution of patient symptoms and quality of life measures, by recovery time category
| Characteristic | Overall | <2 h | 2–6 h | 7–12 h | >12 h | r |
|---|---|---|---|---|---|---|
| Over the past 4 weeks, to what extent were you bothered by itchy skin? | 0.12 | |||||
| Not at all bothered | 39 | 46 | 37 | 34 | 34 | |
| Somewhat bothered | 28 | 27 | 30 | 27 | 24 | |
| Moderately bothered | 16 | 13 | 17 | 17 | 19 | |
| Very much bothered | 11 | 9 | 11 | 14 | 13 | |
| Extremely bothered | 6 | 4 | 5 | 8 | 11 | |
| Over the past 4 weeks, to what extent were you bothered by cramps? | 0.15 | |||||
| Not at all bothered | 68 | 72 | 67 | 64 | 61 | |
| Somewhat bothered | 16 | 16 | 16 | 16 | 14 | |
| Moderately bothered | 9 | 8 | 10 | 9 | 12 | |
| Very much bothered | 5 | 3 | 5 | 6 | 8 | |
| Extremely bothered | 3 | 1 | 2 | 4 | 6 | |
| How often do you have trouble falling asleep? | 0.16 | |||||
| None of the time | 21 | 28 | 20 | 15 | 16 | |
| A little of the time | 21 | 24 | 20 | 18 | 17 | |
| Some of the time | 34 | 29 | 36 | 37 | 32 | |
| All the time | 25 | 19 | 24 | 30 | 35 | |
| How often do you awaken and have trouble falling asleep again? | 0.16 | |||||
| None of the time | 18 | 25 | 16 | 12 | 13 | |
| A little of the time | 24 | 27 | 23 | 22 | 21 | |
| Some of the time | 35 | 30 | 38 | 37 | 34 | |
| All the time | 23 | 18 | 23 | 29 | 32 | |
| How often do you get enough sleep to feel rested upon waking in the morning? | 0.10 | |||||
| All the time | 30 | 37 | 27 | 26 | 29 | |
| Some of the time | 37 | 35 | 39 | 38 | 34 | |
| A little of the time | 22 | 19 | 24 | 24 | 20 | |
| None of the time | 10 | 9 | 10 | 12 | 17 | |
| During the past week, I felt depressed: | 0.22 | |||||
| <1 d | 54 | 67 | 50 | 44 | 41 | |
| 1–2 d | 26 | 22 | 29 | 27 | 26 | |
| 3–4 d | 13 | 8 | 15 | 18 | 17 | |
| 5–7 d | 7 | 3 | 6 | 10 | 17 | |
| Lawton ADL* | 5.5 | 6.3 | 5.4 | 4.8 | 4.2 | −0.27 |
| RAPA** | ||||||
| Aerobic | 3.3 | 3.7 | 3.3 | 2.9 | 2.4 | −0.18 |
| Strength and flexibility | 0.5 | 0.6 | 0.5 | 0.5 | 0.3 | −0.08 |
| KDQOL-36# | ||||||
| Kidney Disease Burden | 36 | 45 | 35 | 30 | 24 | −0.26 |
| Effects of Kidney Disease | 66 | 74 | 65 | 59 | 53 | −0.31 |
| Mental Component Summary | 45 | 49 | 44 | 42 | 38 | −0.33 |
| Vitality | 42 | 55 | 40 | 32 | 23 | −0.39 |
| Social functioning | 55 | 66 | 54 | 47 | 37 | −0.29 |
| Role-emotional | 60 | 73 | 59 | 50 | 40 | −0.34 |
| Mental health | 63 | 73 | 63 | 56 | 49 | −0.32 |
| Physical Component Summary | 37 | 43 | 37 | 33 | 30 | −0.37 |
| Physical functioning | 44 | 60 | 41 | 30 | 25 | −0.33 |
| Role-physical | 46 | 60 | 45 | 33 | 26 | −0.38 |
| Bodily pain | 60 | 74 | 58 | 49 | 41 | −0.35 |
| General health | 42 | 53 | 41 | 33 | 25 | −0.34 |
Note: Values for categorical variables are given as percentages; values for continuous variables are given as means.
KDQOL, Kidney Disease Quality of Life; ADL, activities of daily living; r, Spearman correlation; RAPA, Rapid Assessment of Physical Activity;
*
Lawton ADL counts the number of activities of daily living that can be performed independently.
**
RAPA score is calculated such that higher scores indicate greater physical activity.
#
KDQOL component summaries and subscales are calculated such that higher scores indicate better health.