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Table 1 Baseline characteristicsa of participants retained and not retained (n = 1294). NDIT Study 1999–2020

From: Type of e-liquid vaped, poly-nicotine use and nicotine dependence symptoms in young adult e-cigarette users: a descriptive study

 

Retained

p-valueb for difference

Yes

(n = 775)

Noc

(n = 519)

Age, mean (sd)

12.7 (0.5)

12.9 (0.7)

≤0.001

Male, %

44.0

54.4

≤0.001

Mother university-educated, %

42.3

20.6

≤0.001

French-speaking, %

30.2

29.9

0.917

Born in Canada, %

93.8

89.6

0.006

Ever smoked, %

27.9

38.2

≤0.001

Used other tobacco products, %

8.6

12.2

0.041

  1. aMeasured in cycle 1 (grade 7) in 1999
  2. bBased on t-tests and chi-square tests. Boldface indicates statistical significance (p < 0.05)
  3. cIncludes participants lost-to-follow-up (i.e., participants who dropped out of NDIT) and those who did not provide data in 2017–20 (i.e., participants who did not provide data in 2017–20, but did not drop out of NDIT)
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BMC Public Health

ISSN: 1471-2458

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