Table 3

Risk of being tested, diagnosed and treated for genital Chlamydia trachomatis in the intervention and control groups, the risk ratios and the risk differences by age group and gender in a randomized trial of information and home sampling, Rogaland county, Norway 2006
Outcome Intervention Control Risk ratio (95% confidence interval) Risk difference (95% confidence interval)
n/N Risk (%) n/N Risk (%)
Women 18–21 year Tested 507/2453 20.6 485/7829 6.2 3.3 (3.0 – 3.7) 14.5% (12.8 – 16.2)
Diagnosed 37/2453 1.5 63/7829 0.8 1.9 (1.3 – 2.8) 0.70% (0.18 – 1.2)
Treated 34/2453 1.4 58/7829 0.7 1.9 (1.2 – 2.9) 0.65% (0.15 – 1.2)
Women 2225 year Tested 473/2470 19.1 358/7687 4.7 4.1 (3.6 – 4.7) 14.5% (12.9 – 16.1)
Diagnosed 29/2470 1.2 18/7687 0.2 5.0 (2.8 – 9.0) 0.94% (0.50 – 1.4)
Treated 26/2470 1.1 16/7687 0.2 5.1 (2.7 – 9.4) 0.84% (0.43 – 1.3)
All women Tested 980/4923 19.6 843/15516 2.3 3.7 (3.4 – 4.0) 14.5% (13.3 – 15.6)
Diagnosed 66/4923 1.3 81/15516 0.5 2.6 (1.9 – 3.5) 0.82% (0.48 – 1.2)
Treated 60/4923 1.2 74/15516 0.5 2.6 (1.8 – 3.6) 0.74% (0.42 – 1.1)
Men 1821 year Tested 322/2552 12.6 124/8060 1.5 8.2 (6.7 – 10.0) 11.1% (9.8 – 12.4)
Diganosed 20/2552 0.8 26/8060 0.3 2.4 (1.4 – 4.3) 0.46% (0.10 – 0.82)
Treated 15/2552 0.6 23/8060 0.3 2.1 (1.1 – 3.9) 0.30% (0 – 0.62)
Men 2225 year Tested 351/2525 13.9 105/7942 1.3 10.5 (8.5 – 13.0) 12.6% (11.2 – 14.0)
Diagnosed 19/2525 0.8 18/7942 0.2 3.3 (1.7 – 6.3) 0.53% (0.17 – 0.88)
Treated 14/2525 0.6 14/7942 0.2 3.1 (1.5 – 5.6) 0.38% (0.07 – 0.68)
All men Tested 673/5077 12.4 229/16002 1.4 9.3 (8.0 – 10.8) 11.8% (10.9 – 12.8)
Diagnosed 39/5077 0.8 44/16002 0.3 2.8 (1.8 – 4.3) 0.49% (0.24 – 0.75)
Treated 29/5077 0.6 37/16002 0.2 2.5 (1.5 – 4.0) 0.34% (0.12 – 0.56)

Kløvstad et al.

Kløvstad et al. BMC Infectious Diseases 2013 13:30   doi:10.1186/1471-2334-13-30

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