Table 2. Twin correlations and 95% CI intervals (between parentheses) for exercise participation by country and zygosity group.

	Australia	Denmark	Finland	Netherlands	Norway	Sweden	United Kingdom
MZM	0.43 (0.29–0.56)	0.49 (0.46–0.56)	0.62 (0.60–0.68)	0.71 (0.60–0.79)	0.65 (0.56–0.72)	0.64 (0.59–0.69)	–
DZM	0.32 (0.13–0.49)	0.27 (0.25–0.34)	0.34 (0.28–0.40)	0.36 (0.19–0.52)	0.48 (0.36–0.58)	0.31 (0.25–0.37)	–
MZF	0.48 (0.38–0.56)	0.53 (0.46–0.59)	0.61 (0.55–0.67)	0.63 (0.55–0.70)	0.58 (0.50–0.65)	0.60 (0.54–0.66)	0.70 (0.53–0.83)
DZF	0.32 (0.19–0.44)	0.28 (0.21–0.35)	0.30 (0.28–0.31)	0.38 (0.25–0.50)	0.24 (0.13–0.34)	0.27 (0.21–0.34)	0.35 (0.16–0.51)
DOS	0.07 (−0.05–0.19)	0.09 (0.03–0.14)	0.25 (0.14–0.35)	0.08 (−0.05–0.19)	0.17 (0.09–0.26)	–	–