Characteristic Statistic/ Category Treatment- Naïve (n=155) Treatment - Experienced (n=102) p
Gender n
Female
Male
155
123 (79.4%)
32 (20.7%)
102
85 (83.3%)
17 (16.7%)
.52a
Race n
Minority
Non-minority
154
26 (16.9%)b
128 (83.1%)
102
21 (20.6%)c
81 (79.4%)
.51a
BMI n
M
± SD
Range
155
27.3 ± 6.1
15, 49
101
27.5 ± 6.2
12, 44
.78d
Age (years) n
M
± SD
Range
155
43.2 ± 10.2
19, 64
102
44.4 ± 11.1
21, 69
.38d
Age at diagnosis (years) n
M
± SD
Range
155
40.7 ± 10.1
19, 61
102
37.8 ± 10.1
18, 61
.03d
Duration of MS (years) n
M
± SD
Range
155
2.5 ± 5.4
0, 26
102
6.6† ± 6.0
0, 29
<.001d
Last recorded EDSS n
Mdn
Range
40
1.5
0, 6
23 3.0
1, 7
<.001e
Readiness Survey n
Mdn
Range
153
2.0
1, 4
102 3.0
1, 5
<.001e
Decisional Balance  Pro score    Con score   Combined   n
M
± SD
Range
 154
21.8 ± 3.7
8, 25
 102
21.9 ± 3.5
9, 25
.78d
n
M
± SD
Range
154
9.4 ± 4.1
5, 25
102
8.4 ± 3.3
5, 19
.04d
n
M ± SD
Range
154
12.4 ± 6.0
-6, 20
102
13.5 ± 4.8
-3, 20
.11d
MS Self-Efficacy  Function subscale   n
M
± SD
Range
154
795.5 ± 141.2
100, 900
  102
711.1 ± 157.0 290, 900
<.001d
   Control subscale n
M ± SD
Range
154
650.3 ± 192.3
90, 900
102
554.7 ± 194.3 110, 900
<.001d
  Combined n
M ± SD
Range
154
1445.7 ± 315.0 210, 1800
102
1265.8 ±306.0 550, 1800
<.001d
Self-Injection Competence n
M
± SD
Range
146
7.9 ± 2.1
1, 10
88
8.0 ± 1.9
3, 10
.59d
Table 2: Baseline Characteristics: Treatment-Naïve vs. Treatment- Experienced Patients M = Mean; SD = Standard Deviation; Mdn = Median; aBased on chi-square and Fisher’s Exact Test. bIncludes 15 African-American, 9 Hispanic, 1 Native American, and 1 “Other” patient. cIncludes 16 African-American, 2 Hispanic, 2 Native American, and 1 Asian patient. dBased on independent t test. eBased on Mann-Whitney U test