Table 1.
Sample demographics and clinical characteristics
| Variable, units (n) | Full Sample, n=440 | Fitness Tracker Users, n=122 | Non-Users, n=318 | P-value |
| Mean±SD | Mean±SD | Mean±SD | ||
| Age, years (431) | 66.1±7.9 | 66.0±11.3 | 66.1±6.1 | .91 |
| MS Duration, years (440) | 20.1±13.4 | 18.8±14.9 | 20.6±12.7 | .20 |
| Median(IQR) | Median(IQR) | Median(IQR) | ||
| PDDS (440)*** | 3.0(4.0) | 1.0(3.0) | 4.0(5.0) | .001 |
| n(%) | n(%) | n(%) | ||
| MS Clinical Course (436)*** | .001 | |||
| RRMS | 267(61.2) | 98(80.3) | 169(53.8) | |
| Primary Progressive | 52(11.9) | 17(13.9) | 45(14.3) | |
| Secondary Progressive | 117(26.8) | 7(5.7) | 100(31.8) | |
| Gender (440) | .91 | |||
| Female | 341(77.5) | 95(77.9) | 246(77.4) | |
| Male | 99(22.5) | 27(22.1) | 72(22.6) | |
| Marital Status (439) | .65 | |||
| Married | 306(69.7) | 88(72.1) | 218(68.6) | |
| Single | 29(6.6) | 9(7.4) | 20(6.3) | |
| Divorced/Separated | 74(16.9) | 18(14.9) | 56(17.6) | |
| Widow/Widower | 30(6.8) | 6(5.0) | 24(7.5) | |
| Employed (440)*** | .001 | |||
| Yes | 95(21.6) | 40(32.8) | 55(17.3) | |
| No | 345(78.4) | 82(67.2) | 263(82.7) | |
| Race (439) | .41 | |||
| Caucasian | 409(93.2) | 112(91.8) | 297(93.4) | |
| African American | 11(2.5) | 2(1.6) | 9(2.8) | |
| Latino/a | 1(2) | 1(0.8) | 0(0) | |
| Other | 18(4.1) | 6(5.0) | 12(3.7) | |
| Education (440) | .74 | |||
| High School | 33(7.5) | 7(5.7) | 26(8.1) | |
| 1–3 Years College | 92(20.9) | 28(23.0) | 64(20.1) | |
| College Graduate | 158(35.9) | 43(35.2) | 115(36.2) | |
| Masters Degree | 117(26.6) | 29(23.8) | 88(27.7) | |
| PhD or Equivalent | 40(9.1) | 15(12.3) | 25(7.9) | |
| Annual Household Income (410)*** | .001 | |||
| Less than $15,000 | 12(2.9) | 2(1.7) | 10(3.4) | |
| $15,000–24,000 | 41(10.0) | 2(1.7) | 39(13.3) | |
| $25,000–49,000 | 82(20.0) | 21(17.9) | 61(20.8) | |
| $50,000–74,000 | 93(17.8) | 22(18.8) | 71(24.2) | |
| $75,000–99,000 | 73(17.8) | 30(25.6) | 34(14.7) | |
| $100,000 or greater | 109(26.6) | 40(34.2) | 69(23.5) | |
| Physical Activity | ||||
| GLTEQ Total*** | 25.6±21.1 | 31.2±19.8 | 22.9±21.1 | .001 |
| GLTEQ HCS** | 15.1±18.5 | 19.0±18.1 | 13.6±18.4 | .006 |
| Self-reported Steps Per Day | N/A | 5563±3747 | N/A | N/A |
Note: IQR= Interquartile Range; PDDS= Patient Determined Disease Steps; RRMS= Relapsing Remitting Multiple Sclerosis; GLTEQ= Godin Leisure Time Exercise Questionnaire; HCS= Health Contribution Score
*
p<.05
**
p<.01
***
p<.001
self-reports steps per day were not available for non-users and are not reported for the full sample or subsample of non-users.