TY - JOUR
T1 - Endometriosis as a Comorbid Condition in Chronic Fatigue Syndrome (CFS): Secondary Analysis of Data From a CFS Case-Control Study
AU - Boneva, Roumiana S.
AU - Lin, Jin-Mann S.
AU - Wieser, Friedrich
AU - Nater, Urs Markus
AU - Ditzen, Beate
AU - Taylor, Robert N.
AU - Unger, Elizabeth R.
PY - 2019/5/21
Y1 - 2019/5/21
N2 - Background: Endometriosis (EM) is a recognized co-morbid condition in women with chronic fatigue syndrome (CFS). This analysis evaluates the impact of EM on the health of women with CFS by comparing selected health characteristics and laboratory parameters in women with CFS with and without EM (CFS+ EM and CFS-only).Methods: This secondary analysis included all 36 women with CFS from a cross-sectional study of CFS in Wichita, KS, conducted between 2002 and 2003. The health characteristics and laboratory parameters of interest included functioning, fatigue, CFS-related symptoms, gynecologic history, routine laboratory parameters, inflammatory markers, cortisol levels, allostatic load, and sleep parameters (overnight polysomnography). We used parametric or non-parametric tests to compare group differences in the selected health characteristics and laboratory parameters. For examining the association between EM and variables of interest, logistic regression models were performed and odds ratios (OR) with 95% confidence intervals (CI) were reported for the magnitude of associations. Statistical significance was set at 0.05 (two-sided).Results: The mean age of this study sample was 50.9 years. Of women with CFS, 36.1% reported having EM. Age and body mass index (BMI) did not differ between CFS+ EMand CFS-only groups. When examining the impact of EM, compared to women with CFS-only, women with both CFS and EM were more likely to report chronic pelvic pain [OR = 9.00 (95% CI, 1.47-55.25)] and hysterectomy [OR = 10.3 (1.82-58.39)], had more CFS symptoms (6.8 +/- 0.3 vs. 5.5 +/- 0.3, p = 0.02), younger mean age at menopause onset (36.4 +/- 3.0 vs. 47.0 +/- 2.7 years, p = 0.03), higher mean number of obstructive apnea episodes per hour (20.3 vs. 4.4, p = 0.05) and reported more negative life events (15.8 vs. 4.4, p = 0.05). Other parameters did not differ significantly between the two groups.Conclusions: We found more than a third of women with CFS reported endometriosis as a comorbid condition. The endometriosis comorbidity was associated with chronic pelvic pain, earlier menopause, hysterectomy, and more CFS-related symptoms. However, endometriosis in women with CFS did not appear to further impact functioning, fatigue, inflammatory markers, or other laboratory parameters. Further investigations including younger women are warranted.
AB - Background: Endometriosis (EM) is a recognized co-morbid condition in women with chronic fatigue syndrome (CFS). This analysis evaluates the impact of EM on the health of women with CFS by comparing selected health characteristics and laboratory parameters in women with CFS with and without EM (CFS+ EM and CFS-only).Methods: This secondary analysis included all 36 women with CFS from a cross-sectional study of CFS in Wichita, KS, conducted between 2002 and 2003. The health characteristics and laboratory parameters of interest included functioning, fatigue, CFS-related symptoms, gynecologic history, routine laboratory parameters, inflammatory markers, cortisol levels, allostatic load, and sleep parameters (overnight polysomnography). We used parametric or non-parametric tests to compare group differences in the selected health characteristics and laboratory parameters. For examining the association between EM and variables of interest, logistic regression models were performed and odds ratios (OR) with 95% confidence intervals (CI) were reported for the magnitude of associations. Statistical significance was set at 0.05 (two-sided).Results: The mean age of this study sample was 50.9 years. Of women with CFS, 36.1% reported having EM. Age and body mass index (BMI) did not differ between CFS+ EMand CFS-only groups. When examining the impact of EM, compared to women with CFS-only, women with both CFS and EM were more likely to report chronic pelvic pain [OR = 9.00 (95% CI, 1.47-55.25)] and hysterectomy [OR = 10.3 (1.82-58.39)], had more CFS symptoms (6.8 +/- 0.3 vs. 5.5 +/- 0.3, p = 0.02), younger mean age at menopause onset (36.4 +/- 3.0 vs. 47.0 +/- 2.7 years, p = 0.03), higher mean number of obstructive apnea episodes per hour (20.3 vs. 4.4, p = 0.05) and reported more negative life events (15.8 vs. 4.4, p = 0.05). Other parameters did not differ significantly between the two groups.Conclusions: We found more than a third of women with CFS reported endometriosis as a comorbid condition. The endometriosis comorbidity was associated with chronic pelvic pain, earlier menopause, hysterectomy, and more CFS-related symptoms. However, endometriosis in women with CFS did not appear to further impact functioning, fatigue, inflammatory markers, or other laboratory parameters. Further investigations including younger women are warranted.
KW - CHRONIC PELVIC PAIN
KW - EPIDEMIOLOGY
KW - LIFE
KW - MECHANISMS
KW - RISK
KW - SF-36
KW - STRESS
KW - WOMEN
KW - chronic fatigue syndrome
KW - chronic pelvic pain
KW - cortisol
KW - endometriosis
KW - hysterectomy
KW - inflammatory markers
KW - menopause
KW - sleep
KW - Chronic pelvic pain
KW - Menopause
KW - Endometriosis
KW - Cortisol
KW - Inflammatory markers
KW - Hysterectomy
KW - Chronic fatigue syndrome
KW - Sleep
UR - http://www.scopus.com/inward/record.url?scp=85067511738&partnerID=8YFLogxK
U2 - 10.3389/fped.2019.00195
DO - 10.3389/fped.2019.00195
M3 - Article
VL - 7
JO - Frontiers in Pediatrics
JF - Frontiers in Pediatrics
IS - MAY
M1 - 195
ER -