A slight trend towards an increased lifetime and 12-month prevalence was observed among men between 2009 and 2012; however, this trend in men was not statistically significant, nor was it observed in women (lifetime prevalence: 8.2%, 8.5%, 8.7% for men, 9.3%, 8.8%, 9.0% for women [ 10 ]; 12-month prevalence: 7.2%, 7.6%, 7.9% for men, 7.5%, 7.1%, 7.5% for women [ 10 , 16 , 17 ]).
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