Comparison of the effects of a new 32-gauge × 4-mm pen needle and a 32-gauge × 6-mm pen needle on glycemic control, safety, and patient ratings in Japanese adults with diabetes

This study was designed to evaluate two pen needles (PNs) with the same diameter but different lengths (4 mm and 6 mm) and different needle tip shapes (straight and tapered) to compare their effects on glycemic control, perceived pain, safety, patients' ease of use and preferences, and visual i...

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