Table 3

Characteristics of the participants within GECCO in 2006*†

GECCO
(all cohort studies)
Generations2-studyLongitudinal Aging
Study Amsterdam
Netherlands Longitudinal
Study on Hearing
Netherlands Study of
Depression and Anxiety
Netherlands Twin
Register
New Hoorn Study
Sample characteristics
Number of respondents44 6572022123995297435 5562807
Age in years (Mean (SD)) (range)438 (12.0) (18.0–100.0)30.3 (4.1) (18.3-41.0)72.0 (95) (57.7–98.6)46.6 (12.2) (18.0–70.0)41.9 (13.1) (18.0–65.0)41.5 (9.5) (18.0–100.0)53.4 (6.7) (40.0–66.0)
Sex (female)
(n (%))
26 528 (59.4)202 (100.0)1206 (56.8)625 (62.8)1974 (66.4)21 020 (59.1)1501 (53.5)
Educational level (n (%))‡
 Low9535 (21.4)0 (0.0)1078 (50.8)63 (6.3)199 (6.7)7473 (21.0)722 (25.7)
 Intermediate12 985 (29.1)56 (27.7)687 (32.3)457 (45.9)1733 (58.3)9026 (25.4)1026 (36.6)
 High10 048 (22.5)143 (70.8)358 (16.9)475 (47.8)1042 (35.0)7043 (19.8)987 (35.2)
 Other/Unknown12 089 (27.0)3 (1.5)0 (0.0)0 (0.0)0 (0.0)12 014 (33.8)72 (2.5)
  • *Table 3 presents 2006-data for all cohort studies, except for the Generations2-study. For the Generations2-study 2009-data are shown.

  • †Means and SD are presented for normally distributed continuous variables. Frequencies and proportions are presented for categorical variables.

  • ‡Highest completed level of education was categorised as: Low (elementary not completed, elementary education or lower vocational education), Intermediate (general intermediate education, intermediate vocational education or secondary education) and High (higher vocational education, college education or university education).

  • GECCO, Geoscience and Health Cohort Consortium; n, number  of observations.