Table 1.

Hormonal risk factors.

Author	Study Design	No.	No. of Injured Cases	Significant Risk Factors
Myklebust19	Prospective cohort	23	17	Late luteal phase of menstrual cycle
Slauterbeck35	Unmatched case-control	38	37	Follicular phase of menstrual cycle
Myklebust18	Prospective cohort	69	46	Menstrual phase of menstrual cycle
Beynnon6	Matched case-control	91	46	Preovulatory phase of menstrual cycle
Ruedl31	Matched case-control	186	93	Preovulatory phase of menstrual cycle