Table 3

LTWL success and lifestyle behaviours of adults attempting to lose weight†: multivariable regression‡

LTWL§HEI-2015¶Kcal¶Fast-food**Smoking††Moderate alcohol‡‡Physical activity§§
(Ref.
0%–4.9%)
β (95% CI)β (95% CI)OR (95% CI)OR (95% CI)OR (95% CI)OR (95% CI)
5%–9.9%0.25 (−1.12 to 1.61)−15.54 (−109.38 to 78.30)0.80* (0.64 to 1.00)1.03 (0.79 to 1.35)0.94 (0.76 to 1.16)1.25 (0.96 to 1.62)
10%–14.9%1.59 (−0.92 to 4.10)−17.22 (−140.93 to 106.49)0.94 (0.66 to 1.33)1.35 (0.92 to 1.96)1.01 (0.71 to 1.25)1.04 (0.70 to 1.53)
15%–19.9%3.19** (0.39 to 5.99)−47.66 (−229.90 to 134.59)0.78 (0.50 to 1.22)1.33 (0.81 to 2.19)1.30 (0.85 to 1.99)1.99* (1.11 to 3.55)
≥20%−0.27 (−2.74 to 2.19−202.91** (–345.57 to –60.25)0.92 (0.62 to 1.36)1.63* (1.03 to 2.57)0.92 (0.60 to 1.42)1.70 (0.95 to 3.01)
  • *p<0.05; **p<0.01.

  • †NHANES data 2007–2014 (n=3040).

  • ‡Separate regression models were employed for each dependent variable. Logistic and ordinal regression models were used when the variable was dichotomous (eg, meeting physical activity guidelines: yes/no) and ordered (fast-food), respectively. Ordinary least square regression models were used for continuous variables (HEI, kcal). NHANES weights were employed. Models adjusted for age, sex, race/ethnicity, marital status, college education, household income, household size, current BMI and self-rated health status.

  • §LTWL was calculated by subtracting the reported weight 1 year ago or current weight (the higher of the two), by the reported maximum weight, and then multiplying by 100 to receive a percentage.

  • ¶HEI-2015: indicates adherence to Dietary Guidelines for Americans. The score ranges from 0 to 100 with the highest score indicative of complete compliance with the guidelines. Kcal: total daily calories.

  • **Number of fast-food or pizza place meals in the past 7 days: 0–1, 2–3, 4–6, 7–10 and >10.

  • ††Smoking: current smoking status was based on blood cotinine levels using an established cut-off of 3.08 ng/mL.

  • ‡‡Alcohol: participants were defined as meeting moderate drinking guidelines, if consuming one alcoholic drink or less per day for women or two drinks or less daily for men.

  • §§MET minutes per week for leisure time physical activity. Meeting physical activity guidelines refers to ≥500 MET min/week.

  • HEI, Healthy Eating Index; LTWL, long-term weight loss; MET, metabolic equivalent of task; NHANES, National Health and Nutrition Examination Survey.