The most recent pedometer validation study found the Lifecorder, the NL-2000 and the Digi-Walker to be the most accurate and reliable of 10 brands.* All are NEW-LIFESTYLES pedometers.

Top 3 Accuracy and Reliability Combined
1. Lifecorder
2. NL-2000
3. Digi-Walker

Accuracy (from best to worst)
1. Lifecorder
2. NL-2000
3. Digi-Walker
4. Walk for Life
5. Skeletone
6. Sportline 345
7. Freestyle
8. Oregon Scientific
9. Omron
10. Sportline 330

Reliability (from best to worst)
1. Lifecorder
2. NL-2000
3. Digi-Walker
4. Omron
5. Skeletone
6. Oregon Scientific
7. Freestyle
8. Walk for Life
9. Sportline 345
10. Sportline 330

Specifically, they were exceptionally accurate, having 95% prediction intervals that were within +/-17 steps (of an average of 513) from zero. They were the only pedometers accurate to within +/-3% of the actual steps taken. Their intra-model reliability was also exceptionally high (>0.99). Five models dropped to the moderately accurate category, having 95% prediction intervals that were within +/-100 steps from zero and two models were in the least accurate category and had 95% prediction intervals that were within +/-188 steps from zero.

*P. L. Schneider, S. E. Crouter, Olivera Lukajic, and D. R. Bassett, Jr. Accuracy and reliability of 10 pedometers for measuring steps over a 400-m walk. Med. Sci. Sports & Exerc. 35:1779-1784, 2003.

*P. L. Schneider, S. E. Crouter, and D. R. Bassett, Jr. Comparison of 13 Models. Medicine & Science in Sports and Exercise, 36 (2), 331-335.