Skip to main content

Table 1 Summary of social-demographic characteristics, nocturnal noise, BMI, blood pressure, and scale scores of the 500 participants

From: Indoor nocturnal noise is associated with body mass index and blood pressure: a cross-sectional study

Characteristics Mean ± SD/n %
Mean age ± SD (years) 39 ± 12 /
Gender
 Male 168 34%
 Female 332 66%
Marital status   
 Single 171 34.4%
 Married/Cohabiting 307 61.2%
 Separated/Divorced/Widowed 22 4.4%
Educational level (1 missing)   
 Grade 6 or below 24 5%
 Grade 7–12 251 50%
 Bachelor or above 224 45%
Occupation   
 Working 370 74%
 Not working 73 14%
 Retired 15 3%
 Students 42 8%
Family income (Hong Kong Dollars, 10 missings)   
  < 5000 10 2%
 5000–9999 7 1.4%
 10,000–14,999 17 3.4%
 15,000–19,999 29 5.8%
 20,000–24,999 46 9.2%
 25,000–29,999 53 10.6%
 30,000–34,999 68 13.6%
 35,000–39,999 37 7.4%
 40,000–44,999 55 11.0%
 45,000–49,999 37 7.4%
  > 50,000 131 26.2%
House type   
 Multi-story buildings 473 95%
 Townhouse 27 5%
Diagnosis of hypertension   
 No 478 96%
 Yes 22 4%
Aerobic exercise per week   
  < 1 h 170 34%
 1 h 116 23%
 2 h 88 18%
 3 h 61 12%
 4 h 28 6%
 5 h or more 37 7%
Smoking   
 Never 404 81%
 Quit 38 7%
 Yes 58 12%
Alcohol   
 Never 270 54%
 Quit 36 7%
 Yes 194 39%
Nocturnal noise level (dBA) 51.32 ± 5.61 /
BMI (kg/m2) 22.31 ± 3.66 /
SBP (mmHg) 116.16 ± 12.17 /
DBP (mmHg) 75.44 ± 7.97 /
TST (min) 345.1 ± 57.38 /
PSQI 5.14 ± 2.73 /
WNSS 60.44 ± 12.09 /
ESSI 21.39 ± 4.76 /
PHQ 3.93 ± 3.88 /
PSS 15.60 ± 5.31 /
Anxiety 4.43 ± 3.47 /
Depression 5.15 ± 3.44 /
  1. SD Standard deviation, BMI Body mass index, SBP systolic blood pressure, DBP diastolic blood pressure, TST total sleep time, PSQI Pittsburgh Sleep Quality Index, WNSS Weinstein Noise Sensitivity Scale, ESSI: ENRICHD Social Support Instrument, PHQ Physical Health Questionnaire, PSS Perceived Stress Scale