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Table 3 Health behaviours of women actively planning pregnancy (not using contraception) stratified by age

From: Health behaviours in 131,182 UK women planning pregnancy

   Percentage of active planners (95% CI)
   Age
  Number of active planners 18–24 (n = 25,086) 25–34 (n = 44,795) 35–40 (n = 10,479) 41 + (n = 1310)
Smoking (n = 81,118)
 No 63,561 69.1% (68.5–69.6) 82.2% (82.1–82.3) 83.2% (82.9–83.4) 85.0% (84.3–85.7)
 Yes 17,557 30.9% (30.4–31.5) 17.8% (17.7–17.9) 16.9% (16.6–17.1) 15.0% (14.3–15.7)
 Question not answered 552 - - - -
Illicit or recreational drug use (n = 81,145)
 No 78,301 94.7% (94.6–94.8) 97.3% (97.2–97.3) 97.4% (97.3–97.5) 96.8% (96.5–97.1)
 Yes 2844 5.3% (5.2–5.4) 2.7% (2.7–2.8) 2.6% (2.5–2.7) 3.2% (2.9–3.5)
 Question not answered 525 - - - -
Alcohol consumption (n = 81,128)
 No 41,252 57.0% (56.8–57.2) 47.5% (47.4–47.7) 49.4% (49.1–49.7) 57.1% (56.2–58.0)
 Yes 39,876 43.0% (42.8–43.2) 52.5% (52.3–52.6) 50.6% (50.3–50.9) 42.9% (42.0–43.8)
 Question not answered 542 - - - -
Caffeine consumption (n = 81,029)
 No 17,154 23.4% (23.3–23.6) 19.8% (19.7–19.9) 21.1% (20.8–21.4) 25.7% (24.9–26.5)
 Yes 63,875 76.6% (76.4–76.8) 80.2% (80.1–80.3) 78.9% (78.6–79.2) 74.3% (73.5–75.1)
 Question not answered 641 - - - -
Weekly level of activity (n = 74,600)
 Less than 150 min of activity 31,783 42.4% (42.2–42.7) 43.0% (42.8–43.2) 41.9% (41.5–42.2) 38.0% (37.0–38.9)
 At least 150 min of moderate activity 32,097 41.8% (41.6–42.1) 43.6% (43.4–43.8) 43.1% (42.8–43.5) 44.3% (43.3–45.2)
 150 or more minutes of vigorous activity 10,720 15.7% (15.6–15.9) 13.4% (13.3–13.5) 15.0% (14.8–15.2) 17.8% (17.1–18.5)
 Question not answered 7070 - - - -
Daily consumption of five portions of fruit and vegetables (n = 74,050)
 No 23,031 36.0% (35.7–36.2) 30.2% (30.0–30.3) 25.0% (24.7–25.3) 22.6% (21.8–23.4)
 Yes 40,032 43.7% (43.4–43.9) 56.7% (56.5–56.9) 64.6% (64.3–64.9) 69.2% (68.3–70.0)
 Don’t know 10,987 20.4% (20.2–20.6) 13.1% (13.0–13.2) 10.4% (10.2–10.6) 8.2% (7.7–8.8)
 Question not answered 7620 - - - -
Folic acid supplementation (n = 63,160)
 No 35,333 70.8% (70.7–71.1) 50.9% (50.7–51.1) 44.5% (44.1–44.8) 45.5% (44.5–46.5)
 Yes 27,827 29.1% (28.9–29.3) 49.1% (48.9–49.3) 55.5% (55.2–55.9) 54.5% (53.5–55.5)
 Question not answered 18,510 - - - -