Table 3 Quality of the studies on the Newcastle-Ottawa Quality Assessment Scale for cohort studies.

Agarwal et al.²³ (2016)

Germa et al.²⁴ (2016)

Feldens et al.³² (2016)

Lopes-Freire et al.⁷ (2015)

Peres et al.¹⁰ (2015)

Chen et al.⁹ (2015)

Sum et al.²⁹ (2015)

Agarwal et al.²³ (2014)

Limeira et al.⁸ (2014)

Moimaz et al.²⁸ (2014)

Galan-Gonzalez et al.¹¹ (2014)

Correa-Faria et al.¹² (2014)

Bueno et al.²⁷ (2013)

Caramez da Silva et al.¹⁴ (2012)

Thomaz et al.³¹ (2012)

Raftowicz-Wojcik et al.⁶ (2011)

Nahas-Scocate et al.¹³ (2011)

Romero et al.²⁶ (2011)

Massuia et al.¹⁸ (2011)

Diouf et al.³⁶ (2010)

Kobayashi et al.²² (2010)

Leite-Cavalcanti et al.³⁵ (2007)

Peres et al.²¹ (2007a)

Peres et al.²⁵ (2007b)

Lescano de Ferrer et al.²⁰ (2006)

Luz et al.³⁰ (2006)

Lopez del Valle et al.³⁴ (2006)

Viggiano et al.⁴ (2004)

Warren et al.⁵ (2002)

Karjalainen et al.¹⁹ (1999)