Table 2.

Adolescent, parental and close friends’ smoking prevalence by education levels and intergenerational educational mobility.

	Boys (n = 2,593)		Girls (n = 2,460)
	%	95% CI	%	95% CI
Adolescent smoking prevalence
Parental education
High	18.0	(15.3–21.0)	16.1	(13.7–18.8)
Low	23.2	(20.9–25.7)	25.1	(22.6–27.7)
Adolescent education
High	11.9	(9.4–15.0)	16.3	(14.2–18.7)
Low	25.8	(23.4–28.4)	25.6	(23.0–28.4)
Intergenerational educational mobility
Stable high	12.3	(9.4–16.0)	14.3	(11.5–17.6)
Potentially upwardly mobile	11.0	(7.9–15.3)	19.0	(15.7–22.7)
Potentially downwardly mobile	25.1	(21.0–29.7)	19.2	(14.7–24.7)
Stable low	26.1	(23.3–29.1)	27.5	(24.5–30.9)
Parental smoking prevalence
Parental education
High	41.5	(38.3–44.8)	40.5	(36.6–44.5)
Low	56.1	(53.1–59.1)	56.3	(53.2–59.3)
Adolescent education
High	37.3	(34.1–40.7)	41.3	(37.4–45.3)
Low	57.0	(54.3–59.8)	56.9	(53.6–60.2)
Intergenerational educational mobility
Stable high	33.3	(29.0–37.8)	36.8	(31.7–42.2)
Potentially upwardly mobile	44.6	(38.9–50.5)	47.4	(42.2–52.6)
Potentially downwardly mobile	51.8	(47.1–56.5)	47.0	(40.9–53.2)
Stable low	58.8	(55.4–62.2)	59.9	(56.2–63.4)
Close friends’ smoking prevalence
Parental education
High	45.3	(41.8–48.8)	45.2	(41.2–49.3)
Low	52.1	(49.3–55.0)	56.3	(53.5–59.1)
Adolescent education
High	41.1	(37.4–44.9)	45.1	(41.7–48.6)
Low	53.6	(50.9–56.3)	57.3	(54.5–60.0)
Intergenerational educational mobility
Stable high	40.6	(36.0–45.4)	41.7	(36.6–47.0)
Potentially upwardly mobile	42.1	(36.1–48.3)	49.6	(44.7–54.5)
Potentially downwardly mobile	51.2	(46.2–56.1)	51.4	(45.1–57.7)
Stable low	54.5	(51.2–57.5)	59.1	(55.9–62.2)