Table 1.

Characteristics of all KORA FF4 participants and the subsample that completed dietary questionnaires online^*.

		Sub sample				Total sample
		Men (n = 425) (51.8%)		Women (n = 396) (48.2%)		Men (n = 1,097) (48.3%)		Women (n = 1,175) (51.7%)
		n	%	n	%	n	%	n	%
Age (years)	<50	143	33.6	174	43.9	264	24.1	290	24.7
FF4 examination	50–59	128	30.1	135	34.1	252	23.0	309	26.3
	60–69	104	24.5	72	18.2	270	24.6	286	24.3
	≥70	50	11.8	15	3.8	311	28.4	290	24.7
BMI (kg/m2)	Normal-weight	114	26.8	197	49.7	249	22.7	446	38.0
	Pre-obese	198	46.6	126	31.8	529	48.2	411	35.0
	Obese	113	26.4	73	18.4	319	29.1	318	27.1
Current smoking	Smoker	58	13.6	54	13.6	182	16.6	168	14.3
	Non-smoker	367	86.4	342	86.4	915	83.4	1,007	85.7
Physically active	Yes	266	62.6	274	69.2	609	55.5	693	59.0
	No	159	37.4	122	30.8	488	45.5	482	41.0
Years of education	<12	256	60.2	250	63.1	767	69.9	927	78.9
	≥12	169	39.8	146	36.9	330	30.1	248	21.1

n, number of participants; Normal-weight, BMI <25 kg/m²; Pre-obese, BMI 25–29.99 kg/m²; Obese, BMI ≥ 30 kg/m².

^*At least two out of three 24HFL and one FFQ.