Table 9.

Main results regarding levels of immunoglobulins of included studies.

Author (year)	Thymectomized patients compared to controls	P value
Van den Broek et al. (2017) (7)	↓ IgG; NSS IgM	<0.05
Kurobe et al. (2013) (19)	↓ IgG to measles and rubella	<0.05 and <0.01
Mancebo et al. (2008) (21)	IgG, IgA and IgM within normal range	No comparison to controls
Torfadottir et al. (2006) (15)	NSS IgG to tetanus, measles and mumps	Data not shown
Eysteinsdottir et al. (2004) (31)	↓ IgA e IgG1; NSS IgM, IgG, IgE	<0.05
Wells et al. (1998) (22)	NSS IgG to tetanus	–
Brearley et al. (1987) (3)	↓ IgA; NSS IgG and IgM NSS IgG to tetanus and diphteria	<0.01

NSS, not statistically significant.

↓, lower.