Table 1.

Sample selection and follow-up length

	MONICA					HAPIEE
	CZ	PL-W	PL-T	LT	RU	CZ	PL-K	RU
Baseline, year (response rate, %)	1992 (65)	1983–84 (74), 1988–89 (70)	1983–84 (82), 1987–88 (73)	1983–85 (70), 1986–87 (70), 1992–93 (59)	1985–86 (72), 1988–89 (73), 1994–95 (72)	2002–05 (55)	2002–05 (61)	2002–05 (61)
Recruited, n	3273	4079	4033	5968	9835	8856	10 728	9363
Within the study age range, n	1977	3396	3274	4596	6062	8781	10 728	9352
No pre-existing CVD, n	1861	2437	2782	3806	5669	7633	8316	7316
No missing SCORE values, n	1340	2404	2729	3301	5253	6018	7209	7290
Median follow-up (interquartile range), years	10.0 (10.0–10.0)	10.0 (10.0–10.0)	10.0 (10.0–10.0)	10.0 (10.0–10.0)	10.0 (10.0–10.0)	6.2 (5.8–6.9)	5.1 (4.9–5.8)	4.6 (3.9–5.1)

CZ, Czech Republic; LT, Lithuania; PL-K, Poland (Krakow); PL-T, Poland (Tarnobrzeg); PL-W, Poland (Warsaw); RU, Russia.