Frequency of takeaway meal consumption | Differences/ % differences*≥1week − never or hardly ever | P value (trend) | |||
Never, hardly ever (n=499) | <1 per week (n=894) | ≥1 per week (n=555) | |||
Mean (95% CI) | Mean (95% CI) | Mean (95% CI) | |||
Fat mass index (kg/m5)* | 2.01 (1.95 to 2.08) | 2.10 (2.05 to 2.15) | 2.11 (2.05 to 2.18) | 5.06 (0.53 to 9.79) | 0.03 |
Sum of skinfolds (mm)* | 39.8 (38.1 to 41.6) | 41.8 (40.4 to 43.2) | 42.3 (40.5 to 44.1) | 6.14 (0.05 to 12.60) | 0.05 |
Total cholesterol (mmol/L) | 4.44 (4.37 to 4.50) | 4.51 (4.46 to 4.56) | 4.53 (4.47 to 4.59) | 0.09 (0.00 to 0.18) | 0.04 |
LDL cholesterol (mmol/L) | 2.58 (2.52 to 2.64) | 2.66 (2.61 to 2.70) | 2.68 (2.62 to 2.73) | 0.10 (0.02 to 0.18) | 0.01 |
HDL cholesterol (mmol/L) | 1.53 (1.50 to 1.56) | 1.53 (1.51 to 1.56) | 1.54 (1.51 to 1.57) | 0.01 (−0.02 to 0.05) | 0.47 |
Systolic BP (mm Hg) | 104.5 (103.4 to 105.6) | 104.6 (103.7 to 105.5) | 103.4 (102.3 to 104.5) | −1.12 (−2.41 to 0.17) | 0.08 |
Diastolic BP (mm Hg) | 62.5 (61.6 to 63.4) | 62.8 (62.1 to 63.6) | 62.2 (61.3 to 63.1) | −0.27 (−1.40 to 0.87) | 0.63 |
Insulin (mmol/L)* | 7.17 (6.72 to 7.66) | 7.28 (6.90 to 7.69) | 7.31 (6.86 to 7.78) | 1.84 (−5.48 to 9.72) | 0.64 |
HbA1c (%)* | 5.27 (5.24 to 5.30) | 5.25 (5.23 to 5.27) | 5.28 (5.25 to 5.31) | 0.28 (−0.49 to 1.06) | 0.45 |
Glucose (mmol/L)* | 4.46 (4.43 to 4.49) | 4.44 (4.42 to 4.47) | 4.48 (4.45 to 4.51) | 0.62 (−0.25 to 1.50) | 0.15 |
Triglycerides (mmol/L)* | 0.83 (0.80 to 0.86) | 0.83 (0.81 to 0.85) | 0.81 (0.78 to 0.84) | −2.60 (−6.99 to 2.00) | 0.26 |
Adjusted means and 95% CI are adjusted for age (quartiles), sex, month, ethnic group, socioeconomic status and school (random effect). Missing values for: systolic and diastolic BP,3 insulin,8 HbA1c and19 glucose.14
*Geometric means are presented for variables that were log transformed prior to undertaking the analysis.
BP, blood pressure; CHD, coronary heart disease; HbA1c, haemoglobin A1c; HDL, high-density lipoprotein; LDL, low-density lipoprotein.