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Table 1 Comparison of the participants with and without available data, among those eligible for the analysis

From: Incidence of hypertension in a prospective cohort study of adults from Porto, Portugal

 

With available data N=796 n (%)

Without available data N=323 n (%)

P value

Female gender

498 (62.6)

214 (66.2)

0.245

Age (years)

   

<40

255 (32.0)

140 (43.3)

0.001

40–60

433 (54.4)

141 (43.6)

 

≥60

108 (13.6)

42 (13.0)

 

Education

   

≤4

194 (24.4)

86 (26.6)

0.552

4–12

300 (37.7)

125 (38.7)

 

≥13

302 (37.9)

112 (34.7)

 

Married/civil union

533 (67.0)

195 (60.6)

0.042

Tobacco consumption

   

current smoker

242 (30.5)

124 (39.0)

0.019

ex-smoker

151 (19.0)

48 (15.1)

 

never-smokers

401 (50.5)

146 (45.9)

 

Ethanol intake ≥15.0 g/day (women) or ≥30.0 g/day (men)

193 (26.1)

67 (23.2)

0.331

Physical activity 1

   

1st third

262 (33.2)

99 (31.1)

0.674

2nd third

257 (32.6)

112 (35.2)

 

3rd third

269 (34.1)

107 (33.6)

 

Body mass index (Kg/m 2 )

   

<25

411 (52.4)

178 (56.7)

0.284

25–29.9

281 (35.8)

108 (34.4)

 

≥30

92 (11.7)

28 (8.9)

 

Blood pressure at baseline 2

   

Optimal

286 (35.9)

121 (37.5)

0.043

Normal

266 (33.4)

126 (39.0)

 

High normal

244 (30.6)

76 (23.5)

 
  1. 1 The tertiles of the sample distribution of physical activity were 1.41, 1.58 and 3.46 MET*hour/day among women and 1.38, 1.61 and 3.26 MET*hour/day among men;
  2. 2 Optimal blood pressure was defined as systolic <120 mmHg and diastolic <80 mmHg, normal blood pressure as systolic 120–129 mmHg or diastolic 80–84 mmHg and high normal blood pressure as systolic 130–139 mmHg or diastolic 85–89 mmHg. If systolic and diastolic blood pressure readings belonged to different categories, the highest was considered.