Table 1.
Sample characteristics for cases with nocturia frequency data (N = 1,520)
| Variable | Nocturia frequency | |||||
|---|---|---|---|---|---|---|
| Total % or Mean (SD) | 0/night % or Mean (SD) | 1–2/night % or Mean (SD) | 3–4/night % or Mean (SD) | N | P valuea | |
| Age | 87.6 (2.9) | 88.1 (3.0) | 87.6 (2.9) | 87.6 (3.0) | 1459b | .037 |
| White | 88.0 | 13.6 | 61.1 | 25.3 | 1338 | .285 |
| BMI (range 18.4–36.6) | 26.2 (3.9) | 26.3 (4.0) | 26.1(3.9) | 26.4 (4.1) | 1363 | .463 |
| Stroke | 13.2 | 15.0 | 56.5 | 28.5 | 200 | .485 |
| Diabetes | 15.0 | 14.1 | 52.0 | 33.9 | 227 | .007 |
| Alzheimer disease/dementia | 4.3 | 36.2 | 60.3 | 3.5 | 58 | <.001 |
| Atherosclerotic diseasec | 23.1 | 11.3 | 60.8 | 27.8 | 309 | .292 |
| Heart failure/enlarged heart | 12.2 | 17.8 | 57.3 | 24.9 | 185 | .236 |
| Chronic lung disease | 11.0 | 10.2 | 57.8 | 31.9 | 166 | .100 |
| Osteoarthritis | 43.4 | 13.6 | 60.4 | 25.8 | 657 | .180 |
| Parkinson’s disease | 1.1 | 33.3 | 60.0 | 6.7 | 15 | .040 |
| GDS-15d (range 0–13) | 2.6 (2.4) | 2.5 (2.6) | 2.4 (2.3) | 3.0 (2.7) | 1476 | <.001 |
| Bad dreamse | .027 | |||||
| Not during past month | 83.1 | 14.7 | 59.4 | 25.9 | 1256 | |
| < 1/week | 10.5 | 5.7 | 70.4 | 23.9 | 159 | |
| 1–2/week | 4.7 | 18.3 | 53.5 | 28.2 | 71 | |
| ≥3/week | 1.7 | 7.7 | 61.5 | 30.8 | 26 | |
| Paine | .004 | |||||
| Not during past month | 64.0 | 15.6 | 61.0 | 23.4 | 967 | |
| < 1/week | 11.2 | 12.4 | 63.3 | 24.3 | 169 | |
| 1–2/week | 11.3 | 11.7 | 56.1 | 32.2 | 171 | |
| ≥3/week | 13.5 | 7.8 | 58.3 | 33.8 | 204 | |
| Heartburne | .624 | |||||
| Not during past month | 86.4 | 14.2 | 59.9 | 25.9 | 1306 | |
| < 1/week | 8.5 | 11.6 | 62.8 | 25.6 | 129 | |
| 1–2/week | 3.5 | 7.6 | 69.8 | 22.6 | 53 | |
| ≥3/week | 1.6 | 16.7 | 50.0 | 33.3 | 24 | |
| Restless legs symptoms (#) | .080 | |||||
| 0 | 73.0 | 16.1 | 59.7 | 24.2 | 590 | |
| 1 | 0.3 | 0.0 | 50.0 | 50.0 | 2 | |
| 2 | 2.0 | 11.8 | 70.6 | 17.7 | 17 | |
| 3 | 5.5 | 11.4 | 63.6 | 25.0 | 44 | |
| 4 | 19.2 | 6.5 | 63.2 | 30.3 | 155 | |
| Sedating medication use | 30.5 | 14.3 | 60.7 | 25.1 | 407 | .832 |
| Frequency of hypnotic use | .692 | |||||
| Not during past month | 72.1 | 14.2 | 60.6 | 25.1 | 1090 | |
| <1/week | 7.8 | 11.9 | 61.9 | 26.3 | 118 | |
| 1–2/week | 4.3 | 7.7 | 61.5 | 30.8 | 65 | |
| ≥3/week | 15.8 | 14.7 | 57.6 | 27.7 | 238 | |
BMI=body mass index.
a
Pearson’s chi-squared, Fisher’s exact test, or one-way analysis of variance comparing condition-nocturia relationships.
b
Some participants had missing values for age, because extreme age values were recoded to missing to protect the confidentiality.
c
Heart attack, coronary artery disease, or myocardial infarction, angioplasty, stent placement, or peripheral artery disease.
d
GDS=Geriatric Depression Scale-15 with possible range is 0 to 15.
e
Trouble sleeping in past month due to bad dreams, pain, or heartburn.