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Table 1 Demographic characteristics of the sample at baseline

From: Effects of a health education intervention on hypertension-related knowledge, prevention and self-care practices in Nigerian retirees: a quasi-experimental study

Characteristics Total sample
(N = 392)
Intervention group
(n = 197)
Control group
(n = 195)
χ2/t P-value
Age, mean (SD) 65.9 (8.9) 65.6 (8.4) 66.2 (9.3)   
Age, n (%)     1.88 0.39
 60–69 years 268 (68.4) 141 (71.6) 127 (65.1)   
 70–79 years 95 (24.2) 43 (21.8) 52 (26.7)   
 ≥ 80 years 29 (7.4) 13 (6.6) 16 (8.2)   
Gender, n (%)     13.23 .000*
 Male 197 (50.3) 81 (41.1) 116 (59.5)   
 Female 195 (49.7) 116 (58.9) 79 (40.5)   
Educational level, n (%)     0.18 0.91
 Primary education 56 (14.3) 29 (14.7) 27 (13.8)   
 Secondary education 117 (29.8) 60 (30.5) 57 (29.2)   
 Tertiary education 219 (55.9) 108 (54.8) 111 (50.7)   
Current BP
 SBP, mean (SD) 136.5 (13.3) 137.2 (12.9) 135.9 (13.5) −0.88 0.38
 DBP, mean (SD) 87.9 (9.1) 88.2 (9.9) 87.7 (8.1) −0.45 0.65
BP Categories n (%)     3.61 0.17
 Normal 41 (10.5) 15 (7.6) 26 (13.3)   
 Pre-HT 133 (33.9) 67 (34.0) 66 (33.8)   
 HT 218 (55.6) 115 (58.4) 103 (52.8)   
 BMI, mean (SD) 23.9 (5.1) 23.8 (5.4) 23.9 (4.8) 0.04 0.97
BMI Categories, n (%)     8.64 0.04**
 Underweight 38 (9.7) 27 (13.7) 11 (5.6)   
 Normal 241 (61.5) 117 (59.4) 124 (63.6)   
 Overweight 66 (16.8) 28 (14.2) 38 (19.5)   
 Obese 47 (12.0) 25 (12.7) 22 (11.3)   
  1. HT Hypertension, BMI Body Mass Index, BP blood pressure, SBP Systolic blood pressure, DBP Diastolic blood pressure. *P < .001; **P < 0.05