Table 2. Summary of socio-demographics details for each dataset after quality check.

Dataset	# Males	# Females	Age (Males): Mean ± SD, Min − Max	Age (Females): Mean ± SD, Min − Max	Age (Overall): Mean ± SD, Min − Max
SALD	117	183	45.62 ± 17.82, 20 − 80	45.28 ± 17.46, 19 − 78	45.41 ± 17.57, 19 − 80
Guys	132	168	48.33 ± 16.44, 20 − 86	51.41 ± 14.96, 21 - 80	50.05 ± 15.68, 20 − 86
AOMIC	144	156	23.07 ± 1.74, 20 − 26	23.03 ± 1.79, 20 − 26	23.05 ± 1.77, 20 − 26
BNUBeijing	131	169	21.79 ± 1.86, 18 − 27	21.53 ± 1.89, 18 − 29	21.64 ± 1.88, 18 − 29
NIMHANS	188	112	27.20 ± 5.10, 18 − 49	27.28 ± 6.80, 18 − 50	27.23 ± 5.78, 18 − 50