Table 4.

2018 and 2019 Surveys Comparison of Tests Required for SMA Diagnosis

	Each test comparison
	2018 Response	2019 Response	p value
Electromyography			0.189
Yes	11.3%	14.5%
No	88.7%	85.5%
Genetic Testing			0.03
Yes	52.7%	45.0%
No	47.3%	55.0%
Muscle Biopsy			0.068
Yes	31.0%	37.2%
No	69.0%	62.8%
Serum Creatinine Kinase			0.017
Yes	4.3%	1.7%
No	95.7%	98.3%
Other			0.218
Yes	0.7%	1.7%
No	99.3%	98.3%