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Table 1 The baseline characteristics of the study population and number and weighted percentage of individuals seropositive for CMV in England in 2002

From: Factors associated with cytomegalovirus serostatus in young people in England: a cross-sectional study

Variable Total number Number CMV seropositive (weighted %)
Total 732 175 (23.7)
Sex
 Male 364 74 (20.4)
 Female 368 101 (26.9)
Age at last birthday (years)
 11–14 208 39 (18.3)
 15–18 212 52 (24.6)
 19–21 156 40 (25.6)
 22–24 156 44 (28.3)
Ethnicity
 White 665 127 (19.2)
 Other 77 48 (61.6)
BMI
 Underweight 60 17 (28.1)
 Healthy weight 418 94 (22.0)
 Overweight 141 34 (23.8)
 Obese 87 25 (29.9)
 Missing 26 5 (19.4)
EBV serostatus
 EBV-seronegative 547 34 (17.9)
 EBV-seropositive 185 141 (25.7)
Region of England
 East of England 78 24 (28.7)
 North East 34 6 (18.0)
 North West 130 27 (19.7)
 Yorkshire and The Humber 82 18 (22.1)
 East Midlands 74 13 (17.0)
 West Midlands 70 16 (23.4)
 London 63 30 (47.9)
 South East 119 20 (16.7)
 South West 82 21 (26.4)
Smoking statusa
 Never smoked 86 52 (27.9)
 Current smoker 134 35 (26.0)
 smoker 147 36 (24.5)
 Missing 5 3 (60.0)
Occupational categorya
 Higher managerial and professional 83 26 (31.6)
 Intermediate occupations 69 20 (28.9)
 Routine and manual occupations 254 61 (24.0)
 Never worked or long-term unemployed 11 2 (18.1)
 Other 55 17 (30.3)
  1. aAdults aged ≥16 years only (n = 472). Percentages account for the weighting of the sample to be representative of the English population in 2002 with respect to age and sex. BMI body mass index, CI confidence interval, CMV cytomegalovirus, EBV Epstein-Barr virus