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Table 1 Comparison of Demographics and Comorbidities of Patients With and Without SDs

From: Sleep disorders associated with risk of prostate cancer: a population-based cohort study

  Sleep disorder (N = 41,444) Control (N = 41,444) P value
n % n %
Age, year      0.58
  < 49 24,137 58.2 24,114 58.2  
 50–64 9629 23.2 9597 23.2  
  ≥ 65 7701 18.6 7710 18.6  
Mean (SD) # 48.0 16.6 47.8 16.7 034
Occupation      0.65
 White collar 22,483 54.3 22,367 54.0  
 Blue collar 14,250 34.4 14,377 34.7  
 Others 4711 11.4 4700 11.3  
Urbanization level      0.22
 1 (highest) 12,282 29.6 12,015 29.0  
 2 12,417 30.0 12,472 30.1  
 3 7350 17.7 7436 17.9  
 4 (lowest) 9395 22.7 9521 23.0  
Comorbidity
 Hyperlipidemia 7524 18.2 7630 18.4 0.34
 Diabetes 2187 5.28 2238 5.40 0.43
 Hypertension 12,345 29.8 12,459 30.1 0.39
 Urinary stones 2770 6.68 2868 6.92 0.18
 Urinary tract infection 3039 7.33 2796 6.75 0.001
Obesity 312 0.75 338 0.82 0.31
Anxiety 1775 4.28 1691 4.08 0.14
Depression 1187 2.86 1191 2.87 0.93
COPD 4939 11.9 5033 12.1 0.32
Alcohol-related illness 1573 3.80 1566 3.78 0.90
Medication
 Hypnotics 23,308 56.2 23,082 55.7 0.11
 Antihypertensives 11,657 28.1 11,748 28.4 0.48
PSA screening 5729 13.8 4523 10.9 < 0.001
  1. Chi-square test compared to total SD; #:t test; COPD: Chronic obstructive pulmonary disease
  2. : The urbanization level was categorized into 4 levels according to the population density of the residential area, with level 1 indicating the highest urbanization and level 4 indicating the lowest urbanization