Table 1 The 38 included reviews and the focus on adherence interventions per review

Buring SM et al., 1999 [36]*

Claxton AJ et al., 2001 [15]*

Connor J et al., 2004 [37]*

Iskedjian M et al., 2002 [38]*

Richter A et al., 2003 [39]*

Yildiz A et al., 2004 [40]

Giuffrida A et al., 1997 [42]*

Macharia WM et al., 1992 [43]*

Brown SA 1990 [45]*

Devine EC 1996 [46]*

Devine EC et al., 1995 [47]*

DiMatteo MR 2004 [52]*

Comparative reviews**)

Schedlbauer A et al., 2004 [58]

Schroeder K et al., 2004 [49]*

Merinder LB 2000 [54]

Mullen PD et al., 1992 [51]*

Bender B et al., 2003 [27]

Peterson AM et al., 2003 [29]

Peterson AM et al., 2003 [28]

Takiya LN et al., 2004 [30]

Dolder ChR et al., 2003 [53]*

Roter DL et al., 1998 [31]*

Sharp J et al., 2005 [60]

Higgins N et al., 2004 [59]

Vergouwen ACM et al.2003 [50]*

Multiple-focus reviews**)

Burke LE et al., 1997 [9]*

Dodds F et al., 2000 [35]*

Haynes RB et al., 2005 [6]*

Morrison A et al., 2000 [41]*

Newell SA et al., 1999 [67]

Newell SA et al., 2000 [61]*

Nosé M et al., 2003 [55]

Pampallona S et al., 2002 [68]

Van Dam HA et al., 2003 [56]

Van der Wal MHL et al., 2005 [69]

Van Eijken M et al., 2003 [44]*

Vermeire E et al., 2005 [57]

Zygmunt A et al., 2002 [48]*

Total