Table 2.

Mortality Risk During 7 Years and Between 7 and 12 Years of Follow-up

	Seven Years of Follow-up (104 of 374 Twins Died During this Period)	Seven to 12 Years of Follow-up (112 of 270 Twins Died During this Period)
	Hazards Ratio (95% CI)	Hazards Ratio (95% CI)
1
Sex	0.63 (0.43–0.93)	0.74 (0.50–1.09)
Chronological age	1.16 (1.12–1.21)	1.13 (1.08–1.18)
2
Sex	0.50 (0.33–0.76)	0.71 (0.47–1.08)
Perceived age	1.24 (1.17–1.32)	1.11 (1.05–1.17)
3
Sex	0.51 (0.34–0.77)	0.68 (0.46–1.02)
Chronological age	1.09 (1.04–1.14)	1.11 (1.06–1.17)
Perceived age	1.17 (1.10–1.25)	1.06 (1.00–1.12)

Notes: Data are given including sex in the model for chronological age (1), perceived age (2), and chronological and perceived age together in the model (3). CI = confidence interval.