Table 1. Demographic characteristics of respondents.
| Characteristic | Category | Frequency and percentage |
| Age (Years) | 18-25 years | 1,543 (43.6%) |
| 26-39 years | 1,073 (30.3%) | |
| 40 years and above | 920 (26.0%) | |
| Gender | Female | 2,292 (64.8%) |
| Male | 1,244 (35.2%) | |
| Nationality | Saudi | 3,266 (92.4%) |
| Non-Saudi | 270 (7.6%) | |
| Residence | Makkah | 879 (24.9%) |
| Jeddah | 848 (24.0%) | |
| Taif | 461 (13.0%) | |
| Madina El Monawara | 589 (16.7%) | |
| Al-Qunfudhah | 510 (14.4%) | |
| Laith | 52 (1.5%) | |
| Bahrah | 25 (0.7%) | |
| Rabigh | 166 (4.7%) | |
| Jamum | 6 (0.2%) | |
| Education | High school | 823 (23.3%) |
| Diploma | 305 (8.6%) | |
| Bachelor’s degree | 2,055 (58.1%) | |
| Postgraduate degree | 244 (6.9%) | |
| Other | 109 (3.1%) | |
| Martial status | Married | 1,625 (46.0%) |
| Single | 1,759 (49.7%) | |
| Widow | 54 (1.5%) | |
| Divorced | 98 (2.8%) | |
| Total perceived family income per month | Less than 5000 | 795 (22.5%) |
| 5000-10000 | 1,296 (36.7%) | |
| More than 10000 | 1,445 (40.9%) | |
| Occupation | Employed | 1,175 (33.2%) |
| Unemployed | 1,508 (42.6%) | |
| Student | 853 (24.1%) | |
| If heard before about Multiple Sclerosis | Yes | 2,306 (65.2%) |
| No | 1,230 (34.8%) | |
| Source of information | Internet or social media. | 915 (25.9%) |
| MS patient. | 785 (22.2%) | |
| Family, friends or neighbors. | 194 (5.5%) | |
| Newspaper. | 82 (2.3%) | |
| TV or radio. | 79 (2.2%) | |
| MS information leaflets, brochures, posters etc. | 72 (2.0%) | |
| Health care workers. | 162 (4.6%) | |
| Combined sources. | 8 (0.2%) | |
| Others . | 712 (20.1%) | |
| I didn't hear about the disease | 527 (14.9%) |