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Table 1 The characteristics of the study sample

From: Educational inequalities in self-reported health in a general Iranian population

  All (n = 4163) Male (n = 1997) Female (n = 2166) P
  No. (%) No. (%)% No. (%)  
Age group     < 0.0001
15–24 1420 (34) 681 (34) 739 (34)  
25–44 1614 (39) 721 (36) 893 (41)  
45–64 882 (21) 446 (22) 436 (20)  
≥ 65 247 (6) 149 (8) 98 (5)  
Mean (SD) 35.1 (16.0) 36.1 (16.9) 34.1 (15.1) < 0.0001
Marital status     < 0.0001
Single 1601 (38) 827 (47) 774 (36)  
Married 2406 (58) 1149 (52) 1257 (58)  
Widowed/divorced 156 (4) 21 (1) 135 (6)  
Educational level (years)     < 0.0001
No education 280 (7) 100 (5) 180 (8)  
First level (1–5) 475 (11) 211 (11) 264 (12)  
Second level (6–9) 901 (22) 460 (23) 441 (21)  
Third level (10–12) 1695 (41) 783 (39) 912 (42)  
Fourth level (>12) 812 (19) 443 (22) 369 (17)  
Mean (SD) 10.0 (4.5) 10.4 (4.3) 9.6 (4.5) < 0.0001
Self-reported health     < 0.0001
Excellent/very good 1450 (35) 803 (40) 647 (30)  
Good 1405 (34) 655 (33) 750 (34)  
Fair/poor 1308 (31) 539 (27) 769 (36)  
Chronic diseases     0.004
Yes 296 (7) 117 (6) 179 (8)  
No 3867 (93) 1880 (94) 1987 (92)  
Diseases (n = 296)     0.01
Hypertension 31 (11) 7 (6) 24 (13)  
Other cardiovascular diseases 78 (26) 43 (37) 35 (20)  
Diabetes 22 (7) 8 (7) 14 (8)  
Musculoskeletal disorders 95 (32) 34 (29) 61 (34)  
Cancer 5 (2) 0 (0) 5 (3)  
Neurological and psycho-logical diseases 45 (15) 19 (16) 26 (15)  
Chronic respiratory diseases 20 (7) 6 (5) 14 (8)