TABLE 3.
Twin correlations, split by zygosity and parental education (99% CIs)
| A. Netherlands Twin
Register | |||||||
|---|---|---|---|---|---|---|---|
| Zygosity | Education | Survey 7 | Survey 10 | Survey 12 | Survey 14 | Survey 16 | Survey 18 |
| MZM | Low | .90(.86;.92) | .90(.87;.92) | .87(.85;.90) | .57(.46;.66) | .60(.46;.70) | .64(43;.78) |
| High | .91(.88;.93) | .89(.86;.92) | .88(.85;.90) | .53(.40;.63) | .43(.25;.57) | .47(.18;.68) | |
| DZM | Low | .80(.74;.84) | .57(.47;.66) | .61(.54;.67) | .38(.24;.51) | .41(.19;.58) | .45(.17;.66) |
| High | .80(.74;.85) | .70(.62;.77) | .62(.54;.68) | .31(.15;.46) | .23(−.01;.44) | .33(−.01;.59) | |
| MZF | Low | .89(.85;.92) | .91(.88;.93) | .92(.91;.93) | .74(.68;.79) | .64(.55;.72) | .58(.45;.69) |
| High | .86(.81;.89) | .85(.81;.89) | .86(.83;.88) | .51(.40;.60) | .61(.50;.70) | .74(.59;.83) | |
| DZF | Low | .82(.76;.87) | .67(.58;.74) | .69(.64;.74) | .45(.32;.56) | .26(.11;.40) | .15(−.09;.37) |
| High | .81(.75;.86) | .80(.74;.85) | .76(.70;.81) | .39(.24;.52) | .67(.49;.78) | .16(−.15;.44) | |
| DOS | Low | .40(.30;.48) | .38(.29;.46) | .40(.34;.46) | .13(.03;.24) | .20(.04;.34) | .35(.15;.51) |
| High | .50(.41;.58) | .45(.36;.53) | .44(.37;.51) | .28(.16;.39) | .21(.05;.35) | .20(−.05;.42) | |
| B. The Finnish twin
cohorts | |||||||
|---|---|---|---|---|---|---|---|
| FinnTwin12 | FinnTwin16 | ||||||
| Zygosity | Education | Survey 12 | Survey 14 | Survey 17 | Survey 16 | Survey 17 | Survey 18 |
| MZM | Low | .70(.59;.78) | .66(.54;.76) | .71(.59;.79) | .64(.52;.74) | .59(.45;.70) | .63(.50;.74) |
| High | .59(.44;.71) | .62(.46;.73) | .77(.65;.85) | .75(.63;.84) | .75(.62;.84) | .72(.58;.82) | |
| DZM | Low | .50(.35;.62) | .43(.26;.57) | .41(.22;.57) | .41(.26;.53) | .37(.21;.51) | .38(.22;.52) |
| High | .46(.29;.60) | .31(.11;.48) | .49(.29;.64) | .49(.29;.65) | .44(.22;.61) | .38(.16;.57) | |
| MZF | Low | .70(.60;.78) | .66(.55;.75) | .64(.52;.74) | .71(.62;.78) | .70(.61;.77) | .66(.56;.74) |
| High | .70(.59;.79) | .49(.31;.63) | .65(.51;.76) | .68(.55;.78) | .79(.70;.86) | .74(.63;.82) | |
| DZF | Low | .61(.47;.71) | .41(.23;.57) | .32(.12;.50) | .44(.29;.56) | .50(.36;.62) | .30(.13;.45) |
| High | .66(.52;.76) | .51(.33;.65) | .43(.23;.59) | .51(.31;.66) | .43(.22;.60) | .31(.09;.51) | |
| DOS | Low | .28(.15;.39) | .28(.15;.40) | .22(.08,.35) | .19(.08;.29) | .20(.09;.31) | .20(.09;.31) |
| High | .34(.20;.46) | .08(−.07;.23) | .15(−.01;.30) | .20(.04;.35) | .24(.08;.39) | .25(.09;.40) | |
Based on the fully saturated model; MZM=monozygotic male, DZM=dizygotic male, MZF=monozygotic female, DZF=dizygotic female, DOS=dizygotic of opposite-sex.