Walgreens (NASDAQ:WBA) has reported its April metrics. For the month, the company's sales came in at $5.98 billion, a rise of nearly 4% over the $5.76 billion the company posted in the same month in April 2012. Overall front-end (i.e., non-pharmacy goods) sales fell by 2.9% over that time, while pharmacy sales were 7.3% higher.

Comparable store sales -- a key metric for any retail operation -- advanced 1.2% on a year-over-year basis for the month. Front-end "comps" were down by 4.3% over that time frame, however. Also recording a decline was the metric for customer traffic on a comparable-store basis, which fell 5.9%. Comparable pharmacy sales, on the other hand, grew by 4.7% over April 2012's figure.