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Table 2 Prevalence of IgG antibodies against cytomegalovirus (CMV) by demographic characteristics in female child day care workers (2007) in Amsterdam, The Netherlands, and in women of the Amsterdam population (2004) *

From: Increased seroprevalence of IgG-class antibodies against cytomegalovirus, parvovirus B19, and varicella-zoster virus in women working in child day care

Characteristics Study Sample CMV IgG Positive Univariable PR (95 % CI)
N n % p value   p value
Total 529 386 73.0 %    
Working in child day care     0.8   
No 288 209 72.6 %   1  
Yes 241 177 73.4 %   1.0 (0.9–1.1) 0.8
Age (in years)     0.08   
16–24 110 80 72.3 %   1  
25–34 199 135 67.8 %   0.9 (0.8–1.1) 0.4
35–44 220 171 77.7 %   1.1 (0.9–1.2) 0.3
Country of birth     < 0.001   
The Netherlands & Other European countries 313 178 56.9 %   1  
Non-European countries** 216 208 96.3 %   0.6 (0.5–0.7) < 0.001
Age at immigration     <0.001   
0–17 years 95 88 92.6 %   1  
18 and older 138 129 93.5 %   1.0 (0.9–1.1) 0.8
Data Missing 8 8 100 %   
Not applicable (born in the Netherlands) 288 161 55.9 %   
Having children     < 0.001   
No 175 113 64.6 %   1  
Yes 288 236 81.9 %   1.3 (1.1–1.4) < 0.001
Data missing 66 39 56.1 %   
Number of children     < 0.001   
0 175 113 64.6 %   1  
1 103 76 73.8 %   1.1 (1.0–1.3) 0.1
2 111 90 81.8 %   1.3 (1.1–1.5) 0.003
3 74 70 94.6 %   1.5 (1.3–1.7) < 0.001
Number of children missing 66 37 56.1 %   
  1. * All analysis adjusted for day-care centre clustering.
  2. ** Africa, Asia and Central and South America.