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Table 2 Summery of included studies which reported the relationship of pediatric hypertension (HTN) and smoking

From: Effect of passive exposure to cigarette smoke on blood pressure in children and adolescents: a meta-analysis of epidemiologic studies

Author, year; country

Type of survey

Study type

Total sample

Sexa

Age

HTN definitionb

Smoking definition

Type of exposer

BP measurements method

Akis, 2009; Turkey [28]

Local

Case-control

236

42

12 to 14

BP > 95th

More than 1 cigarette per week

Active

Three times measurement of BP using an automatic sphygmomanometer device

Bozza, 2016; Brazil [29]

Local

Cross-section

1242

596

11 to 17

BP > 95th

Cigarettes smoked 10 to 30 days

Active

Two times measurement of BP using auscultatory method

Christofaro, 2015; Brazil [30]

Local

Cross-section

1231

NR

14 to 17

BP > 95th

Current daily smoking at least 1 cigarette

Active

two times measurement of BP using an automatic oscillometric device

Cinteza, 2013; Romania [31]

Regional

Cross-section

4886

2407

3 to 17

BP > 95th

Current smoking

Active

Three times measurement of BP. First measurement using an automatic oscillometric device and a BP mercury device for the second and the third measurement

Crispim, 2014; Brazil [32]

Local

Cross-section

276

145

2 to 4

BP > 95th

Current smoking

Passive (domestic)

Two times measurement of BP using a semi-automatic an oscillometric device

Dasgupta, 2006; Canada [33]

Local

Cohort

1267

1018

10 to 18

BP > 90th

Current smoking

Active

Three times measurement of BP using an automatic oscillometric device

Giussani, 2013; Italy [34]

Regional

Cross-section

1310

682

5 to 14

BP > 90th

At least one parent with smoking habit

Passive (domestic)

Two times measurement of BP using a aneroid sphygmomanometer device

Gomes, 2009; Brazil [35]

Local

Cross-section

1875

718

14 to 20

BP > 95th

NR

Active

Single measurement of BP using an automatic oscillometric device

Guo, 2011; China [36]

Local

Cross-section

4445

2298

5 to 18

BP > 95th

At least 1 cigarette per month

Active

Two times measurement of BP using a mercury sphygmomanometer device

International Collaborative Group, 1984; Europe [37]

International

Cohort

2704

NR

14

BP > 95th

More than 5 cigarette per week

Active; pregnancy

Three times measurement of BP using a mercury sphygmomanometer device

Nur, 2008; Turkey [38]

Local

Cross-section

1020

593

14 to 18

BP > 95th

NR

Active

Three times measurement of BP using a mercury sphygmomanometer device

Pileggi, 2005; Italy [39]

Local

Cross-section

603

284

6 to 18

BP > 95th

Current smoking

Active

Three times measurement of BP using a mercury sphygmomanometer device

Shankaran, 2006; USA [40]

Regional

Cohort

516

275

6

BP > 95th

NR

Pregnancy

Two times measurement of BP using an automatic oscillometric device

Simonetti, 2011; Germany [42]

National

Cross-section

4236

2181

4 to 7.5

BP > 95th

Current smoking

Passive (domestic)

Three times measurement of BP using an auscultatory aneroid sphygmomanometry device

van den Berg, 2013; Netherland [41]

Local

Cohort

3024

1521

5 to 6

BP > 90th

NR

Passive (domestic)

Two or three times measurement of BP using an automatic sphygmomanometer device

  1. aMale sex (number of children);
  2. bHypertension (HTN) was defined as systolic or diastolic blood pressure more than 95th percentile; Prehypertension was defined as systolic or diastolic blood pressure between 90th and 95th percentiles
  3. BP Blood pressure, NA Not applicable, NR Not reported