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Table 1 Demographic characteristics and comorbidities of asthmatics and healthy controls

From: A nationwide study of asthma correlates among adolescents in Saudi Arabia

  All Non-asthmatic Asthmatic  
(n = 11,348) % (n = 10,412) % (n = 936) % p-value
Demographics
Age (years) Between 10 and 14 3209 (28.4) 2930 (28.2) 279 (29.9) 0.28
Between 15 and 18 8101 (71.6) 7447 (71.8) 654 (70.1)
Gender Male 5808 (51.2) 5197 (49.9) 611 (65.3) < 0.001
Female 5540 (48.8) 5215 (50.1) 325 (34.7)
Nationality Saudi 9632 (87.3) 8794 (87.0) 838 (90.7) 0.001
Non Saudi 1400 (12.7) 1314 (13.0) 86 (9.3)
Father’s level of education: high school and above   5785 (59.4) 5343 (59.8) 442 (54.6) 0.003
Mother’s level of education: high school and above   4563 (45.1) 4213 (45.3) 350 (42.7) 0.16
Monthly income for family ≤15,000 SAR   4165 (71.0) 3768 (70.7) 397 (74.8) 0.05
Comorbidities
Diabetes   76 (0.7) 70 (0.7) 6 (0.7) 0.95
Hematological disorder   419 (3.7) 374 (3.6) 45 (4.9) 0.05
Allergies other than asthma   531 (4.7) 418 (4.0) 113 (12.2) < 0.001
Genitourinary   137 (1.2) 116 (1.1) 21 (2.3) 0.002
BMI Underweight 1704 (15.1) 1559 (15.1) 145 (15.6) < 0.001
Healthy weight 6190 (54.9) 5769 (55.7) 421 (45.2)  
Overweight 1603 (14.2) 1460 (14.1) 143 (15.3)  
Obese 1788 (15.8) 1565 (15.1) 223 (23.9)  
  1. a: most of the times or always