Maternal Circulating Concentrations of Tumor Necrosis Factor-Alpha, Leptin, and Adiponectin in Gestational Diabetes Mellitus: A Systematic Review and Meta-Analysis

Table 2

Assessment of study quality.

Authors	Year	Selection				Comparability	Exposure			Score
		1	2	3	4	5	6	7	8
Cseh et al. [9]	2002	*	*		*	**	*	*
Gao et al. [14]	2008	*	*		*	**	*	*
Kirwan et al. [4]	2002	*	*	*	*	**		*
Chen et al. [20]	2010	*	*		*	**	*	*
Festa et al. [21]	1999	*	*		*	**	*	*
Okereke et al. [28]	2004	*	*	*	*	**	*	*
Yilmaz et al. [30]	2010	*	*		*	**	*	*
Ballesteros et al. [31]	2011	*	*		*	**	*	*
Cortelazzi et al. [32]	2007	*	*		*	**	*	*
Thyfault et al. [34]	2005	*	*		*	**	*	*
Tsai et al. [35]	2005	*	*		*	**	*	*
Altinova et al. [13]	2007	*			*	**	*	*
Gauster et al. [15]	2011	*			*	**	*	*
Kinalski et al. [16]	2005	*			*	**	*	*
McLachlan et al. [17]	2006	*			*	**	*	*
Radaelli et al. [7]	2003	*	*			**	*	*
Ranheim et al. [29]	2004	*			*	**	*	*
Saucedo et al. [18]	2011	*			*	**	*	*
Winkler et al. [19]	2002	*			*	**	*	*
Georgiou et al. [22]	2008	*	*			**	*	*
Horosz et al. [23]	2011	*			*	**	*	*
Kautzky-Willer et al. [24]	2001	*			*	**	*	*
Mokhtari et al. [26]	2011	*	*		*	*	*	*
Vitoratos et al. [27]	2001	*			*	**	*	*
Worda et al. [36]	2004	*	*		*	*	*	*
Kleiblova et al. [25]	2010	*				**	*	*
Soheilykhah et al. [33]	2009	*			*	**		*