Table 1 Characteristics of the students included in the study

From: Longitudinal impact of weight change on blood pressure in University students

 

Men (n = 13,061)

 

Women (n = 7868)

 
 

1st year

4th year

p value

1st year

4th year

p value

Age, year

19.4 ± 0.6

22.4 ± 0.6

< 0.001

19.2 ± 0.5

22.2 ± 0.5

< 0.001

Height, cm

171.9 ± 5.7

172.4 ± 5.7

< 0.001

158.9 ± 5.3

159.3 ± 5.3

< 0.001

Weight, kg

63.1 ± 9.2

64.3 ± 9.8

< 0.001

50.4 ± 6.3

51.0 ± 6.5

< 0.001

BMI, kg/m2

21.3 ± 2.8

21.6 ± 3.0

< 0.001

19.9 ± 2.2

20.1 ± 2.2

< 0.001

SBP, mmHg

117.9 ± 12.3

118.2 ± 12.6

< 0.001

103.9 ± 11.3

103.9 ± 11.3

< 0.001

DBP, mmHg

63.9 ± 8.0

65.7 ± 8.2

< 0.001

59.3 ± 7.4

60.8 ± 7.6

< 0.001

BMI category (JASSO-2022), n (%)

  

 Underweight

1631 (12.5)

1,465 (11.2)

< 0.001

1930 (24.5)

1830 (23.3)

0.02

 Normal

10,238 (78.4)

10,136 (77.6)

5756 (73.2)

5827 (74.1)

 Obese

1192 (9.1)

1460 (11.2)

182 (2.3)

211 (2.7)

BP category (JSH-2019), n (%)

 Normal BP

7215 (55.2)

7298 (55.9)

0.66

7149 (90.9)

6847 (87.0)

0.32

 High normal BP

3343 (25.6)

3188 (24.4)

522 (6.6)

752 (9.6)

 Elevated BP

2202 (16.9)

2140 (16.4)

180 (2.3)

248 (3.2)

 Grade I hypertension

280 (2.1)

385 (2.9)

15 (0.2)

18 (0.2)

 Grade II hypertension

19 (0.1)

47 (0.4)

1 (0.0)

3 (0.0)

 Grade III hypertension

2 (0.0)

3 (0.0)

1 (0.0)

0 (0.0)

Isolated systolic hypertension

282 (2.2)

377 (2.9)

< 0.001

13 (0.2)

12 (0.2)

0.8

n (%) of 120/80 mmHg or higher

5846 (44.8)

5763 (44.1)

0.22

719 (9.1)

1021 (13.0)

< 0.001

  1. Data are presented as mean ± standard deviation (SD), or number (percentage). Chi-square independence tests were used to compare the categorical variables
  2. Interaction between sex and ΔBW was modeled to allow for sex-specific associations
  3. The following covariates were included in the multivariable spline models: age, baseline BW, and baseline SBP for ΔSBP models; age, baseline BW, and baseline DBP for ΔDBP models. Interaction between sex and ΔBW was modeled to allow for sex-specific associations
  4. BMI Body mass index, SBP Systolic blood pressure, DBP Diastolic blood pressure, BP Blood pressure, JASSO Japan Society for the Study of Obesity, JSH The Japanese Society of Hypertension