More information on the 2011 study (last slide)

The 2011 study  found no difference in the number of symptoms reported between male and female athletes, no difference in the time symptoms took to resolve (most reported resolution of their symptoms within 3 days of injury) or in the time it took for girls and boys to return to play (median time for RTP was 3 to 6 days).  The one difference: girls reported symptoms more subtle and easily missed or attributed to causes other than concussion than those of boys.

2. Frommer L, Gurka K, Cross K, Ingersoll C, Comstock R.D., Saliba S. Sex Differences in Concussion Symptoms of High School Athletes. J Ath Train 2011; 46(1):000-000.

http://www.momsteam.com/health-safety/gender-and-concussion-history-affect-recovery-study-finds