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Table 6 Anthropometric and blood pressure before and after a 16-week intervention with B vitamin-fortified drinks (per-protocol analysis)

From: Effectiveness of a fortified drink in improving B vitamin biomarkers in older adults: a controlled intervention trial

  Placebo Active P value
Pre-intervention Post-intervention Pre-intervention Post-intervention
Weight (kg) 72.5 (61.7–80.2) 74.5 (63.0–83.0) 72.8 (63.3–84.2) 74.4 (64.5–83.8) 0.593
BMI (kg/m2) 24.8 (23.0–28.3) 24.9 (23.6–29.1) 25.4 (23.4–29.5) 25.2 (23.6–29.3) 0.618
Waist circumference (cm) 90.8 (81.5–100.3) 93.0 (82.0–100.0) 89.8 (81.5–105.1) 89.0 (84.5–107.0) 0.967
Systolic BP (mmHg) 129.2 (20.0) 130.9 (16.3) 127.2 (21.1) 127.7 (19.2) 0.516
Diastolic BP (mmHg) 76.0 (9.2) 76.2 (8.6) 75.2 (11.5) 74.6 (10.1) 0.503
  1. Data presented as mean (SD) and median (IQR). Per-protocol analysis includes participants who completed the 16-week intervention. P value of group effects when analysed by ANCOVA adjusted for baseline status. P < 0.05 considered statistically significant. BP, blood pressure