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. 2009 Oct 30;9:399. doi: 10.1186/1471-2458-9-399

Table 1.

Background characteristics of London respondents in quantitative arm, by sample

Community sample
n = 2,276
Clinic sample
n = 357
Internet sample
n = 372
p value
n % n % n %

Age (mean; sd) 29.1 (8.6) 26.9 (4.5) 28.3 (6.6) < 0.01
Male 1,103 48.5 95 26.6 175 47.0 < 0.01
Born in A8 country 1,679 74.2 296 83.4 357 97.8 < 0.01
Working 1,647 72.8 288 80.7 313 84.1 < 0.01
Completed higher education 668 29.4 192 53.9 163 43.9 < 0.01
Married or co-habiting 1,189 52.7 150 42.0 172 47.3 < 0.01
Arrived in UK since May 2004 1,762 79.5 219 62.2 285 78.1 < 0.01