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Table 1 Overview of the multivariable models, their outcomes and comparison groups in the Internet-based cross-sectional MSM study.

From: Self-reported sexually transmitted infections and their correlates among men who have sex with men in Norway: an Internet-based cross-sectional survey

Model

Outcome*

Comparison group

1.

Chlamydia, NO selected STI

respondents not reporting any selected STI

2.

gonorrhoea or gonorrhoea AND any selected STI

respondents not reporting any selected STI

3.

HIV infection or HIV infection AND any selected STI**

respondents not reporting any selected STI

  1. * all outcomes diagnosed in the past 12 months
  2. **selected STI - syphilis, gonorrhoea, HIV or Chlamydia in the past 12 months