Table 1: Descriptive statistics for study populations.

MS subspecialistsNon-MS subspecialists and general neurologists
Number%Number%

Total study population8715.1848684.82
Subspecialty status:
 Non-MS subspecialist 36475.83
 General neurologists11624.17
Practice arrangement:
 Solo practice1618.3912325.31
 Neurology group2933.3312124.90
 Multispecialty group1112.64489.88
 University based group1719.546112.55
 Other55.755611.52
 Unknown910.347715.84

Demographic characteristics
Age:
 44 years or less1618.6012426.05
 45 to 53 years3136.0512125.42
 54 to 59 years2529.0711824.79
 60 years or more1416.2811323.74
Sex:
 Male6170.1134471.07
 Female2629.8914028.93
White:
 Yes6788.1630576.63
 No911.849323.37
Asian:
 Yes911.848320.85
 No6788.1631579.15
Other race:
 Yes00.00133.27
 No76100.0038596.73
Hispanic or Latino:
 Yes45.41246.25
 No7094.5936093.75
Year began medical practice after completing medical training:
 1972 to 19851517.2412325.84
 1986 to 19933236.7810321.64
 1994 to 20012731.0312626.47
 2002 to 20111314.9412426.05

Limiting attitudes towards providing MS patient care
Care for MS patients takes too much time:
 Yes3641.388717.90
 No5158.6239982.10
Insufficient reimbursement for time involved:
 Yes3944.8311623.87
 No4855.1737076.13
Lack of sufficient knowledge to feel comfortable caring for this patient population:
 Yes00.00326.58
 No87100.0045493.42
Lack of sufficient knowledge regarding newer disease-modifying drugs:
 Yes11.155912.14
 No8698.8542787.86
Lack of special personnel (nurses, social workers, etc.):
 Yes2427.5911523.66
 No6372.4137176.34
Little can be done to improve MS patients’ outcomes:
 Yes00.0020.41
 No87100.0048499.59
Seldom encounter MS patients:
 Yes00.007014.40
 No87100.0041685.60
MS patients are often difficult to treat:
 Yes66.90489.88
 No8193.1043890.12
MS patients often have multiple comorbidities:
 Yes2022.997014.40
 No6777.0141685.60
Providing care to MS patients is not sustainable in my practice environment due to time or reimbursement constraints:
 Yes89.204910.08
 No7990.8043789.92

Positive attitudes towards providing MS patient care
Ability to improve patient outcomes and quality of life:
 Yes8193.1038278.60
 No66.9010421.40
Dynamic area with evolving treatment options:
 Yes7788.5127055.56
 No1011.4921644.44
Care involving a multidisciplinary approach:
 Yes5259.7711623.87
 No3540.2337076.13
Research opportunities:
 Yes5462.076012.35
 No3337.9342687.65
Personal connection to individuals with MS who are not your patients:
 Yes1618.39336.79
 No7181.6145393.21
Enjoy interacting with MS patients:
 Yes6271.2617335.60
 No2528.7431364.40
Community of dedicated professional colleagues with which to interact:
 Yes4349.4310020.58
 No4450.5738679.42

Practice characteristics
Area in which you are practicing:
 Within a major city (population greater than
 250,000)
5058.1423448.45
 Suburban or moderate-sized city (population 50,000
 to 250,000)
2933.7218137.47
 Rural area or small city (population less than 50,000)78.146814.08

MS subspecialists answered “Yes, and I chose a fellowship in MS” to question “Did you consider a fellowship in MS as subspecialty training?” and, on average, saw at least one MS patients per week. Respondents who did not complete an MS fellowship were categorized as MS subspecialists if indicated that they saw, on average, more than 12 patients per week.
The “other” category includes neurologists who responded “staff-model HMO,” “government hospital or clinic,” or “other public or private hospital or clinic setting” to question “Indicate in which practice arrangement you spend the majority of your clinical time.”