Table 2 Changes in prehypertensive status of the full sample

SBP(mmHg)

127.35 ± 5.99

128.41 ± 5.86

129.42 ± 6.02

26.233

 < 0.001^a

DBP(mmHg)

75.75 ± 7.29

75.70 ± 7.09

75.96 ± 7.51

0.314

0.730^a

Gender, n(%)

4.056

0.132^c

Man

462(31.2)

579(39.1)

440(29.7)

Women

470(34.5)

524(38.4)

370(27.1)

Age group(years), n(%)

47.064

 < 0.001^b

45–54

353(38.2)

372(40.2)

200(21.6)

55–64

368(32.5)

431(38.0)

335(29.5)

65–74

158(27.9)

217(38.3)

192(33.9)

 ≥ 75

52(24.0)

82(37.8)

83(38.2)

Missing, n

1

1

0

Marital status, n(%)

1.496

0.473^c

Single

102(30.4)

130(38.7)

104(31.0)

Married or cohabiting

830(33.1)

973(38.8)

706(28.1)

Region, n(%)

3.167

0.205^c

Urban

106(28.6)

153(41.4)

111(30.0)

Rural

820(33.3)

946(38.4)

697(28.3)

Missing, n

6

4

2

Education level, n(%)

10.233

0.037^b

Primary and lower

624(32.6)

716(37.4)

576(30.1)

Junior/secondary/vocational school

280(33.3)

354(42.1)

206(24.5)

College and higher

28(31.5)

33(37.1)

28(31.5)

Current smoking status, n(%)

0.396

0.820^c

Yes

344(32.1)

422(39.4)

306(28.5)

No

588(33.2)

681(38.4)

504(28.4)

Alcohol habits, n(%)

7.533

0.023^c

Yes

411(30.8)

514(38.5)

411(30.8)

No

519(34.5)

587(39.0)

399(26.5)

Missing, n

2

2

0

Social activity, n(%)

3.097

0.213^c

No

404(32.8)

458(37.2)

369(30.0)

Yes

528(32.7)

645(40.0)

441(27.3)

BMI, n(%)

39.890

 < 0.001^b

Normal

519(35.9)

545(37.7)

380(26.3)

Underweight

58(41.7)

49(35.3)

32(23.0)

Overweight

264(30.2)

357(40.8)

254(29.0)

Obese

68(20.9)

135(41.4)

123(37.7)

Missing, n

23

17

21

Abdominal obesity, n(%)

23.106

 < 0.001^c

No

378(37.9)

379(38.0)

240(24.1)

Yes

554(30.0)

724(39.2)

570(30.8)

Health status, n(%)

8.405

0.078^b

Good

247(33.9)

292(40.1)

189(26.0)

Fair

467(30.9)

601(39.8)

441(29.2)

Poor

202(35.5)

198(34.8)

169(29.7)

Missing, n

16

12

11

Chronic disease, n(%)

18.262

 < 0.001^b

0

335(34.0)

408(41.5)

241(24.5)

1

282(31.8)

352(39.7)

253(28.5)

 ≥ 2

301(32.7)

318(34.6)

301(32.7)

Missing, n

14

25

15

Sleep duration (h/night), n(%)

6.182

0.627^b

 ≥ 7and < 8

176(32.7)

218(40.4)

145(26.9)

 < 6

289(32.7)

334(37.8)

260(29.4)

 ≥ 6and < 7

206(32.2)

260(40.7)

173(27.1)

 ≥ 8and < 9

173(35.1)

178(36.1)

142(28.8)

 ≥ 9

48(28.6)

74(44.0)

46(27.4)

Missing, n

40

39

44

Nap time(min/day), n(%)

9.084

0.011^b

0

413(45.8)

486(45.3)

305(39.2)

 > 0 and < 30

61(6.8)

74(6.9)

59(7.6)

 ≥ 30 and < 60

92(10.2)

95(8.9)

78(10.0)

 ≥ 60

335(37.2)

418(39)

337(43.3)

Missing, n

31

30

31