Table 5 Subgroup analyses for stroke

Publication year

Before 2010

1.09 (0.95–1.24)

0.211

54.5

0.086

0.248

2010 or after

1.14 (0.96–1.35)

0.127

58.2

0.067

Sample size

≥ 10,000

1.03 (0.99–1.07)

0.181

0.0

0.537

0.020

<  10,000

1.18 (1.02–1.36)

0.029

46.5

0.096

Percentage male (%)

≥ 60.0

1.03 (0.99–1.07)

0.181

0.0

0.537

0.020

<  60.0

1.18 (1.02–1.36)

0.029

46.5

0.096

Assessment of exposure

FFQ

1.19 (0.95–1.50)

0.125

76.0

0.016

0.503

24 h urine collection

1.08 (0.96–1.21)

0.190

36.8

0.176

Follow-up duration (years)

≥ 10.0

1.15 (0.97–1.37)

0.116

72.4

0.012

0.453

<  10.0

1.08 (0.98–1.20)

0.136

18.2

0.300

Adjusted BMI

Yes

1.10 (1.01–1.19)

0.029

53.7

0.035

–

No

–

–

–

–

Adjusted smoking

Yes

1.13 (1.00–1.28)

0.048

60.2

0.020

0.865

No

1.05 (0.97–1.14)

0.236

–

–

Adjusted alcohol

Yes

1.14 (0.99–1.31)

0.072

66.2

0.011

0.744

No

1.06 (0.98–1.14)

0.174

0.0

0.636

Adjusted Previous CVD

Yes

1.09 (0.99–1.20)

0.074

64.4

0.038

0.395

No

1.10 (0.91–1.32)

0.317

49.7

0.114

Adjusted DM

Yes

1.14 (0.99–1.31)

0.072

66.2

0.011

0.744

No

1.06 (0.98–1.14)

0.174

0.0

0.636

Adjusted PA

Yes

1.11 (1.01–1.22)

0.026

64.6

0.015

0.892

No

1.03 (0.82–1.29)

0.811

0.0

0.326

Adjusted potassium

Yes

1.04 (0.96–1.13)

0.309

0.0

0.396

0.963

No

1.16 (1.02–1.33)

0.029

65.2

0.013