TASK DEFINITION: Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.
PROBLEM: Question: Is vitamin D deficiency independently associated with greater prevalence of erectile dysfunction : The National Health and Nutrition Examination Survey ( NHANES ) 2001-2004?
Answer: In this cross-sectional analysis of a representative sample of U.S. men, vitamin D deficiency was associated with an increased prevalence of ED independent of ASCVD risk factors. Additional research is needed to evaluate whether treating vitamin D deficiency improves erectile function.

SOLUTION: yes

PROBLEM: Question: Does a novel biomechanical device improve gait pattern in patient with chronic nonspecific low back pain?
Answer: Patients with NSLBP treated with the novel biomechanical device for 3 months increased walking speed through longer step length and eliminated asymmetrical differences.

SOLUTION: yes

PROBLEM: Question: Is gene expression during gonocyte transformation into spermatogonial stem cells androgen dependent?
Answer: These results show that androgen did not influence gene expression in postnatal mouse testis, which coincides with human 'minipuberty'. The results are consistent with gonocyte transformation being independent of androgens, and that nonandrogenic regulators need to be identified.

SOLUTION:
no