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Table 1 Demographic and clinical characteristics of patients

From: An application of the theory of planned behavior to self-care in patients with hypertension

Variables   N(%) Knowledgea(mean ± se) Behaviora(mean ± se)
Age < 60 198(39.6) 6.82 ± .10 6.12 ± .09
60–70 189 (37.8) 6.78 ± .10 6.25 ± .09
> 70 113 (22.6) 6.34 ± .12 6.30 ± .12
   P = .013 P = .458
Sex Female 217 (43.4) 6.70 ± .10 6.14 ± .07
Male 283 (56.6) 6.69 ± .08 6.69 ± .08
   P = .961 P = .172
Education Illiterate 85 (17.0) 6.19 ± .16 6.21 ± .14
< High school diploma 142 (28.4) 6.67 ± .11 6.36 ± .10
High school diploma 159 (31.8) 6.94 ± .11 6.13 ± .10
Academic
>Bachelor’s degree
114 (22.8) 6.76 ± .14 6.13 ± .13
   P = .002 P = .418
Duration of hypertension (months) 1–3 yrs. 188 (37.9) 6.76 ± .10 6.25 ± .10
3–6 yrs. 149 (30.0) 6.85 ± .11 6.32 ± .10
6–8 yrs. 58 (11.7) 6.61 ± .18 6.36 ± .14
8 yrs. < 102 (20.5) 6.40 ± .15 6.03 ± .14
   P = .101 P = .435
Smoking Yes 124 (24.7) 6.26 ± .14 6.26 ± .11
No 376 (75.2) 6.84 ± .07 6.196 ± .06
   P = .001 P = .597
Alcohol use Yes 76 (15.2) 6.76 ± .16 6.226 ± .06
No   6.696 ± .07 6.15 ± .13
   P = .956 P = .690
  1. aKnowledge and behavior were calculated by summing questions in the part 2 of the questionnaire. They then were standardized in a way to shaping two 10 scales variables named as Knowledge and Behavior