E-Table 1. Number of participating general practices in each state.

Federal State	n
Baden-Württemburg	186
Bavaria	248
Berlin	91
Brandenburg	36
Bremen	12
Hamburg	23
Hesse	87
Mecklenburg-Western Pomerania	37
Lower Saxony	141
North Rhine-Westphalia	313
Rhineland-Palatinate	64
Saarland	30
Saxony	89
Saxony-Anhalt	42
Schleswig-Holstein	58
Thuringia	54
Total	1511