Table 4.
Comparison of characteristics and polysomnography after propensity score matching based on age, hypertension, and diabetes mellitus
| Variable | Nocturia (n = 66) | Control (n = 66) | P-valuea) |
|---|---|---|---|
| Age (yr) | 53.39 ± 10.90 | 52.85 ± 10.37 | 0.630 |
| Male sex | 51 (77.27) | 42 (63.64) | 0.086b) |
| Hypertension | 33 (50.00) | 34 (51.51) | 0.862b) |
| Diabetes mellitus | 13 (19.70) | 12 (18.18) | 0.824b) |
| Body mass index (kg/m2) | 26.59 ± 4.24 | 26.11 ± 3.35 | 0.469 |
| Neck circumference (cm) | 38.48 ± 4.25 | 38.97 ± 3.37 | 0.463 |
| Waist circumference (cm) | 95.70 ± 10.78 | 94.45 ± 9.53 | 0.482 |
| WHR | 0.95 ± 0.59 | 0.95 ± 0.54 | 0.548 |
| IPSS | 12.05 ± 7.47 | 6.32 ± 5.42 | < 0.001 |
| QoL | 3.56 ± 1.26 | 2.33 ± 1.14 | < 0.001 |
| Polysomnography | |||
| Total sleep time (min) | 237.37 ± 87.33 | 250.60 ± 87.42 | 0.396 |
| Sleep efficacy (%) | 74.35 ± 14.43 | 77.39 ± 12.76 | 0.177 |
| N3 (%) | 0.51 ± 1.75 | 1.38 ± 4.11 | 0.115 |
| REM (%) | 15.23 ± 7.42 | 15.49 ± 5.73 | 0.840 |
| Snoring time (%) | 40.91 ± 23.64 | 45.59 ± 21.79 | 0.224 |
| Apnea index (events/hr) | 20.58 ± 25.92 | 18.44 ± 22.58 | 0.743 |
| Hypopnea index (events/hr) | 16.29 ± 15.31 | 17.16 ± 15.04 | 0.698 |
| AHI (events/hr) | 36.87 ± 30.95 | 35.56 ± 26.02 | 0.797 |
| Low O2 (%) | 78.45 ± 14.56 | 79.53 ± 11.20 | 0.624 |
| Mean O2 (%) | 94.18 ± 3.08 | 95.15 ± 2.13 | 0.033 |
| T90 | 9.34 ± 3.08 | 5.30 ± 9.49 | 0.076 |
| ODI3 (events/hr) | 35.44 ± 31.08 | 33.63 ± 25.60 | 0.710 |
| ODI4 (events/hr) | 29.44 ± 30.11 | 25.48 ± 24.71 | 0.401 |
| Arousal index (events/hr) | 41.42 ± 21.27 | 38.48 ± 19.62 | 0.432 |
| ESS | 9.42 ± 6.61 | 8.15 ± 4.66 | 0.255 |
| PSQI | 9.73 ± 4.36 | 6.14 ± 3.09 | < 0.001 |
Values are presented as mean±standard deviation.
WHR, waist-hip ratio; IPSS, International Prostate Symptom Score; QoL, quality of life; REM, rapid eye movement; AHI, apnea-hypopnea index; T90, time spent in desaturation below 90%; ODI3, oxygen desaturation index ≥3%; ODI4, oxygen desaturation index ≥4%; ESS, Epworth Sleepiness Scale; PSQI, Pittsburgh Sleep Quality Index.
a)
Student t-test.
b)
Chi-square test.