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Table 1 Socio-demographic characteristics of cases and controls enrolled in a case-control study of risk factors for multiple sclerosis in Kuwait

From: A matched case-control study of risk factors associated with multiple sclerosis in Kuwait

Characteristics MS patients
(N1 = 110)
Controls
(N2 = 110)
n1 (%) n2 (%)
Current age (years)
  < 20 8 (7.3) 4 (3.6)
 20–29 28 (25.5) 34 (30.9)
 30–39 43 (39.1) 40 (36.4)
 40–49 19 (17.3) 19 (17.3)
  ≥ 50 12 (10.9) 13 (11.8)
 Mean (SD) 34.8 (10.3) 34.9 (10.6)
 Age (years) at MS onset Mean (SD) 27.3 (9.0) 27.3 (9.0)
Gender
 Male 26 (23.6) 26 (23.6)
 Female 84 (76.4) 84 (76.4)
Nationality
 Kuwaiti 91 (82.7) 91 (82.7)
 Non-Kuwaiti 19 (17.3) 19 (17.3)
Country of birth
 Kuwait 98 (89.1) 103 (93.6)
 Abroad 12 (10.9) 7 (6.4)
Marital status at MS onset
 Never married 54 (49.1) 61 (55.5)
 Ever married 56 (50.9) 49 (44.5)
Income (KD/month) at MS onset
  ≤ 600 13 (12.4) 13 (12.0)
 601–1200 25 (23.8) 24 (22.2)
  > 1201 67 (63.8) 71 (65.7)
Area of residence
 Capital 30 (27.5) 22 (20.0)
 Hawalli 36 (33.0) 53 (48.2)
 Farwaniya 13 (11.9) 7 (6.4)
 Ahmadi 8 (7.3) 11 (10.0)
 Jahra 4 (3.7) 7 (6.4)
 Mubarak Al Kabeer 18 (16.5) 10 (9.1)