Study subjects
A total of 1,933,846 subjects were reviewed, including 154,725
endometriosis patients, 1,778,317 healthy controls, 418 CPP patients
without endometriosis and 386 infertile women without endometriosis. For
the comparison of patient groups, different types of methods were used.
Twenty-one studies investigated anxiety and depression symptoms in
endometriosis patients without including a control group
[27,33,34,36,37,39-42,45,47,49,50,52,58,59,63,65,66,69,70,72,73].
Twenty-six studies compared endometriosis patients with a group of
either healthy controls [30,32,35,38,39,46,51,55], CPP patients
without endometriosis [29,48,54,60,67], infertile patients without
endometriosis [61,64] or a combination of control groups
[28,43,44,53,56,57,62,68,71]. Four studies compared endometriosis
patients with pain symptoms to pain-free endometriosis patients
[28,34,35,47]. Two studies compared endometriosis patients with and
without infertility [59,62].