Table 4

Sex distribution (row %) of samples according to study design

Study population
nSex unknownBoth sexesMen onlyWomen only
Total34811.550.931.06.6
Study design:4-165
 Cross sectional9712.460.819.67.2
 Cohort8811.437.547.73.4
 Exposed versus non-exposed6811.841.242.64.4
 Case or referent494.157.118.420.4
 Systematic collection4617.463.019.60.0
Design:4-150
 Prospective6917.440.639.12.9
 Retrospective27910.153.429.07.5
  • 4-150 p<0.05;

  • 4-165 p<0.001.