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Table 1 Distribution of the study variables among participating adolescent school-students of Kolkata (N = 1652)

From: Exercise and eating habits among urban adolescents: a cross-sectional study in Kolkata, India

Continuous variables Number   Mean (95%CIa)
Age in years 1652   14.2(14.1–14.2)
Categorical variables Categories Number Percentage (95%CI)
Other socio-demographic factors Gender of student Female 885 53.6(51.2–56.0)
Male 767 46.4(44.0–48.8)
Socio-economic status Lower 276 17.0(15.2–18.8)
Middle 1012 62.3(60.0–64.7)
Upper 336 20.7(18.7–22.7)
Family history of death due to CVDc No 854 78.7(76.3–81.2)
Yes 231 21.3(18.9–23.7)
Level of knowledge regarding CVD in general Poor 677 41.0(38.6–43.4)
Average 603 36.5(34.2–38.8)
Good 372 22.5(20.5–24.5)
Blood pressure and its abnormalities Poor 965 58.4(56.0–60.8)
Average 499 30.2(28.0–32.4)
Good 188 11.4(9.9–12.9)
Risk factors for CVDs Poor 662 40.1(37.7–42.4)
Average 607 36.7(34.4–39.1)
Good 383 23.2(21.2–25.2)
Prevention of CVDs Poor 856 51.8(49.4–54.2)
Average 565 34.2(31.9–36.5)
Good 231 14.0(12.3–15.7)
Healthy nutritional habits Poor 847 51.3(48.9–53.7)
Average 524 31.7(29.5–34.0)
Good 281 17.0(15.2–18.8)
CVD and their prevention (Overall) Poor 719 43.5(41.1–45.9)
Average 647 39.2(36.8–41.5)
Good 286 17.3(15.5–19.1)
Self-perception about Own body size Normal 961 58.7(56.4–61.1)
Underweight 288 17.6(15.8–19.5)
Overweight 387 23.7(21.6–25.7)
Obese - -
Own future risk of CVDs No 1324 81.8(79.9–83.7)
Yes 295 18.2(16.3–20.1)
Own overall health Good 993 60.5(58.1–62.8)
Average 573 34.9(32.6–37.2)
Poor 76 4.63(3.61–5.65)
Exercise Moderate and Vigorous Activity No 1171 71.0(68.8–73.2)
Yes 479 29.0(26.8–31.2)
Exercise No Exercise 197 12.0(10.4–13.6)
Inadequate 965 58.8(56.4–61.2)
Adequate 479 29.2(27.0–31.4)
Dietary history Meals taken/day One/two 867 52.6(50.2–55.0)
Three 596 36.1(33.8–38.5)
> Three 186 11.3(9.8–12.8)
Snacks taken/day ≤ Three 806 48.9(46.5–51.4)
Four times 690 41.9(39.5–44.3)
> Four times 151 9.2(7.8–10.6)
Average frequency of food intake Approximately appropriate 785 47.6(45.2–50.0)
More than appropriate 632 38.3(36.0–40.7)
Much more than appropriate 232 14.1(12.4–15.8)
Skipping meals Never 736 44.8(42.4–47.2)
Sometimes 690 42.0(39.6–44.4)
Often 216 13.2(11.5–14.8)
Eating food in the street-shop/restaurant Never 161 9.9(8.4–11.3)
Sometimes 870 53.3(50.9–55.7)
Often 601 36.8(34.5–39.2)
Overall eating habit Poor 888 53.(51.4–56.2)
Average 472 28.6(26.4–30.8)
Good 292 17.7(15.8–19.5)
  1. a CI Confidence intervals
  2. b SES Socio-economic status of the families of the students
  3. c CVD Cardio-vascular diseases