Newcomb ME, Mustanski B, Internalized homophobia and internalizing mental health problems: A meta-analytic review, 2010: Clinical Psychology Review, Vol: 30, No: 8, p1019-1029.

The study used Hierarchical Linear Modeling to perform meta-analysis of studies on internalized homophobia and mental health problems.  A small to moderate overall effect size for the relationship between the two variables. 

Link: 
Author: 
Newcomb ME
Mustanski B
Long Title: 
Newcomb ME, Mustanski B, Internalized homophobia and internalizing mental health problems: A meta-analytic review, 2010: Clinical Psychology Review, Vol: 30, No: 8, p1019-1029.