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. 2013 Jun 21;3(6):e002601. doi: 10.1136/bmjopen-2013-002601

Table 1.

Characteristics of the five population-based studies (CARLA, DHS, KORA, HNR and SHIP, Germany, 1997–2006)

CARLA DHS KORA HNR SHIP
Study period 12/2002–01/2006 09/2003–06/2004 10/1999–04/2001 12/2000–06/2003 10/1997–03/2001
Federal state (region) Saxony-Anhalt (east) North Rhine-Westphalia (west) Bavaria (south) North Rhine-Westphalia (west) Mecklenburg-West Pomerania (northeast)
Sampling Stratified random sampling Stratified random sampling Two-stage cluster sampling Stratified random sampling Two-stage cluster sampling
Cities Halle (Saale) Dortmund Augsburg Bochum, Essen, Mülheim Greifswald, Stralsund
Neighbourhoods (n)/types 43/city districts 62/statistical administrative units 17/planning regions 108/ statistical administrative units 6/clusters of city districts
Total regional population (neighbourhood range) 238 078 (18–19 210) 587 607 (476–25 686) 252 725 (2730–37 246) 1 142 112 (262–32 466) 115 962 (5230–31 154)
Unemployment rate (%; neighbourhood range)* 14.1 (3.9–22.5) 15.3 (5.0–27.7) 4.8 (1.9–7.6) 7.5 (1.7–13.5) 13.1 (9.9–14.9)

*Data on neighbourhood unemployment were collected in the year 1999 in SHIP, in 2000 in KORA, in the year 2001 in HNR and in 2003 in CARLA and DHS.

CARLA, Cardiovascular Disease, Living and Ageing in Halle Study; DHS, Dortmund Health Study; HNR, Heinz Nixdorf Recall Study; KORA, Cooperative Health Research in the Region of Augsburg; SHIP, S4 Study and the Study of Health in Pomerania.