Table 3.

Prospected sample size by districts: environs

District	Population	GP sample	Patients contacted
Harburg	242 871	8	120
Herzogtum lauenburg	189 043	6	90
Neumünster	77 058	2	30
Nordwestmecklenburg	155 265	5	75
Osterholz	110 882	4	60
Ostholstein	197 835	6	90
Pinneberg	301 223	9	135
Plön	126 643	4	60
Rendsburg-Eckernförde	268 075	8	120
Segeberg	263 202	8	120
Schwerin	91 583	3	45
Stade	196 516	6	90
Stormarn	234 674	7	105
Verden	132 459	4	60

GP, general practitioner.