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Table 3 1-year prevalence of headache disorders and associations with elevated blood pressure

From: Elevated blood pressure and headache disorders in China – associations, under-treatment and implications for public health

Participating sample

Prevalence

Migraine

Tension-type headache

Headache on ≥15 days/month

n

% (95 % CI)

n

% (95 % CI)

n

% (95 % CI)

All (N = 4,987)

 Normal BP (n = 3,885)(reference)

345

8.9(8.0-9.8)

405

10.4(9.4-11.4)

27

0.7(0.4-1.0)

 Elevated BP (n = 1,102)

121

11.0(9.2-12.8)

130

11.8(9.9-13.7)

21

1.9(1.1-2.7)

 Total

466

9.3(8.5-10.2)

535

10.7(9.9-11.6)

48

1.0(0.7-1.2)

 Chi-squared

4.468

1.687

13.200

 P

0.035

0.194

0.000

 OR (95 % CI)

1.3 (1.0-1.6)

1.1(0.9-1.4)

2.8 (1.6-4.9)

 AOR(95 % CI)

1.1(0.9-1.4)

1.0(0.8-1.3)

1.7 (0.9-3.1)

 P (AOR)

0.344

0.954

0.103

Male (N = 2,532)

 Normal BP (n = 1,953) (reference)

104

5.3(4.3-6.3)

149

7.6(6.4-8.8)

8

0.4(0.1-0.7)

 Elevated BP (n = 579)

46

7.9(5.7-10.1)

44

7.6(5.4-9.8)

5

0.9(0.1-1.7)

 Total

150

5.9(5.0-6.8)

193

7.6(6.6-8.6)

13

0.5(0.2-0.8)

 Chi-squared

5.499

0.001

1.802

 P

0.019

0.981

0.180

 OR (95 % CI)

1.5(1.1-2.2)

1.0 (0.7-1.4)

2.1(0.7-6.5)

 AOR (95 % CI)

1.3(0.9-1.9)

0.8(0.6-1.2)

1.4(0.4-4.7)

 P(AOR)

0.150

0.280

0.539

Female (N = 2,455)

 Normal BP (n = 1,932) (reference)

241

12.5(11.0-14.0)

256

13.3(11.8-14.8)

19

1.0(0.6-1.4)

 Elevated BP (n = 523)

75

14.3(11.3-17.3)

86

16.4(13.2-19.6)

16

3.1(1.6-4.6)

 Total

316

12.9(11.6-14.2)

342

13.9(12.5-15.3)

35

1.4(0.9-1.9)

 Chi-squared

1.278

3.500

12.620

 P

0.258

0.061

0.000

 OR (95 % CI)

1.2 (0.9-1.6)

1.3 (1.0-1.7)

3.2 (1.6-6.2)

 AOR (95 % CI)

1.0(0.8-1.4)

1.2 (0.9-1.6)

1.7(0.8-3.6)

 P(AOR)

0.852

0.311

0.143

  1. AOR: adjusted odds ratio; BP: blood pressure; CI: confidence interval; OR: odds ratio