Table 1. Sexual Frequency Models Baseline Full Coef/se Coef/se Survey Year -0.1578 -0.0961 (0.0839) (0.0840) Age -0.9841*** -1.5366*** (0.1423) (0.1494) Age-squared -0.0050*** -0.0011 (0.0014) (0.0015) Sex (0=M/1=F) -8.6533*** (0.8774) Race (0=W/1=B) 0.2552 (1.2956) Years of Education -0.2405 (0.1600) # of children 4.2528*** (0.2999) Constant 427.5277* 320.5676 (167.6112) (167.4782) R-squared 0.147 0.160 N of cases 19,679 19,600 Source: General Social Survey, 1972-2006 * p<0.05, ** p<0.01, *** p<0.001