Fluctuations in mortality affected earnings at Reinsurance Group of America Inc. during the first quarter.

RGA, St. Louis, is reporting $32 million in net income for the latest quarter on $1.3 billion in revenue, compared with $76 million in net income on $1.2 billion in revenue for the first quarter of 2007.

The amount of reinsurance written was down in the United States during the quarter but up in Canada, the Asia Pacific region, and the RGA region that includes Europe and South Africa.

Profits were down mainly because of what RGA believes to be a random increase in mortality in the United States and the United Kingdom, the company says.