The distributions of FNGPs against age in both gender group (black lines for Caucasian; broken lines for Chinese). a Caucasian vs. Chinese: in females: p = 0.001, slope = 0.00021 vs. p < 0.001, slope = 0.0057 in males: p < 0.001, slope = 0.0076 vs. p < 0.001, slope = 0.00045. b Caucasian vs. Chinese: in females: p < 0.001, slope = 0.0021 vs. p < 0.001, slope = −0.0022 in males: p < 0.001, slope = −0.0018 vs. p < 0.001, slope = −0.0021. c Caucasian vs. Chinese: in females: p = 0.04, slope = −0.0011 vs. p < 0.001, slope = −0.0021 in males: p < 0.001, slope = −0.00077 vs. p < 0.001, slope = −0.00051. d Caucasian vs. Chinese: in females: p < 0.001, slope = −0.000039 vs. p < 0.001, slope = −0.000049 in males: p < 0.001, slope = −0.000029 vs. p < 0.001, slope = −0.000048. e Caucasian vs. Chinese: in females: p < 0.001, slope = 0.067 vs. p < 0.001, slope = 0.069 in males: p < 0.001, slope = 0.057 vs. p < 0.001, slope = 0.068