Sample size of 45,696, with participants ranging from 4 to 80 years old. The mean age (SD), mean was 30.39 (17.46) years.
Gender was reported in 51.45% (n = 23,557) of the data. Of the data with reported gender, 11,871 were males (50.39%), and 11,686 were females (49.61%). Of the 45,696 participants, 42.38% (n = 19,366) reported ethnicity, with the majority identifying as White (n = 13,465, 69.53%). The next largest ethnic group was Asian at 5.48% (n = 1063), then Latin American (n = 982, 5.07%), then Black (n = 796, 4.11%).
Handedness was reported by 51.45% (n =23,109) of participants, most of whom were right-handed (n = 20,467, 88.57%). 2,010 (8.70%) were left-handed, and 632 (2.73%) reported being ambidextrous.