Table 1. Characteristics of the studies included assessing associations.

CVD, cardiovascular disease; HR, hazard ratio; CI, confidence interval; OR, odds ratio; BP, blood pressure; NR, not reported; RR, relative risk; PCa, prostate cancer; SIR, standardised incidence ratio; WHO, World Health Organization; NHL, non-hodgkins lymphoma; IVF, in vitro fertilization; ICSI, intra-cytoplasmic sperm injection; DM, diabetes mellitus; CCI, Charlson comorbidity index; MS, multiple sclerosis.