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Table 1 Sample characteristics

From: Validity and reliability of a Malay version of the brief illness perception questionnaire for patients with type 2 diabetes mellitus

  Validation, n = 312 Negeri Sembilan 2-week test-retest reliability, n = 97 Selangor 4-week test-retest reliability, n = 129
Age, mean (SD)* 58.1 (9.67) 56.1 (9.10) 59.1 (9.61)
Diabetes duration in years, mean (SD) 8.5 (4.79) 8.5 (5.92) 8.3 (4.15)
  n (%)
Gender
 Female 184 (59.0) 61 (62.9) 69 (53.5)
 Male 128 (41.0) 36 (37.1) 60 (46.5)
Ethnicitya
 Malay 240 (76.9) 97 (100) 87 (67.4)
 Chinese 9 (2.9) 0 9 (7.0)
 Indian 61 (19.6) 0 32 (24.8)
Educational levela
 No school 15 (4.9) 0 9 (7.1)
 Primary school level 99 (32.2) 14 (14.6) 55 (43.3)
 Secondary school level 161 (52.4) 70 (72.9) 56 (44.1)
 Tertiary school level 32 (10.4) 12 (12.5) 7 (5.5)
Life event in the past 6 monthsa
 Yes 61 (19.7) 27 (28.4) 16 (12.4)
 No 248 (80.3) 68 (71.6) 113 (87.6)
Co-morbidity
 Hypertension 269 (86.2) 84 (86.6) 108 (83.7)
 Dyslipidaemia 256 (82.1) 84 (86.6) 107 (82.9)
 Any diabetes complicationa 98 (31.4) 25 (25.8) 51 (39.5)
Treatment
 Oral hypoglycaemic agenta 266 (85.3) 94 (96.9) 103 (79.8)
 Insulina 161 (51.6) 74 (76.3) 58 (45.0)
 HbA1c in %, mean (SD)a 9.0 (2.27) 9.7 (1.99) 8.9 (2.43)
  1. SD standard deviation
  2. a Statistically significant differences between the Negeri Sembilan and Selangor at p value <0.05