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Table 1 Characteristics of 1,341 participants of the Amsterdam Health Monitoring Survey, 2004

From: Seroprevalence of varicella-zoster virus and predictors for seronegativity in the Amsterdam adult population

Characteristics Study sample Amsterdam adult population
n (%) (Estimated proportion)
Total 1,341   
Sex    
 Female 717 (53.5) 50.3
 Male 619 (46.2) 49.7
 Sex missing 5 (0.4) -
Age category    
 18–34 212 (15.8) 35.1
 35–44 291 (21.7) 23.8
 45–54 325 (24.2) 17.1
 55–64 279 (20.8) 12.0
 65 and older 224 (16.7) 12.0
 Age missing 10 (0.7) -
Ethnic origin    
 Dutch 437 (32.6) 53.5
 Moroccan 275 (20.5) 6.9
  1st generation, Moroccan 262 - -
 Surinamese or Antillean 88 (6.6) 9.3
  1st generation, Surinamese or Antillean 78 - -
 Turkish 319 (23.8) 4.4
  1st generation, Turkish 306 - -
 Other ethnic origin 212 (15.8) 25.9
  1st generation, other ethnic origin 189 - -
 Ethnic origin missing 10 (0.7) -
Immigration status    
 Autochthonous (born in the Netherlands) 516 (38.5) 64.4
 Immigrated at age ≤ 10 years 64 (4.8) 5.8
 Immigrated at age > 10 years 721 (53.8) 29.8
 Immigrated at unknown age 32 (2.4) -
 Country of birth missing 8 (0.6) -
Having children    
 Yes 634 (47.3) 55.7
 No 394 (29.4) 44.3
 Missing 313 (23.3) -
Number of children (n = 1,028)    
 0 394 (38.3) 44.8
 1 203 (19.7) 21.6
 2 239 (23.2) 22.0
 3 or more 176 (17.1) 11.6
 Number of children missing 16 (1.2) -