Abstract
Background: The diurnal variations in stature significantly affect the reliability of height data. Diurnal variation in stature affects the reliability of any data that involves height measurement without a correction factor at different times of the day. The aim of this study was to determine the diurnal height loss of adults aged ≥30 years in the Greater Accra Region of Ghana. Methods: A total of 90 individuals were randomly sampled. Weight and height measurements were taken twice a day between 5.30–7.30 am and 5–7 pm. The WHO Stepwise questionnaires were used to gather all information on subjects. Results: The maximum height loss between 7 am and 7 pm from the study was 2.7 cm whereas mean was 1.61 cm. There was a greater mean height loss in males (1.63 cm) than in females (1.59 cm), greater mean body mass index (BMI) difference between morning and evening BMI was observed for females (1.21 kg/m 2 ) than in males (1.02 kg/m 2 ). There was a significant association between height loss and occupational activities ( P Conclusion: The height of the individuals significantly reduced from 7 am to 7 pm and increased from 7 pm to 7 am. The major factor that contributes to diurnal height variations is the level of occupational activity performed in a day. No significant relationships were established between age, sex, total caloric intake, and diurnal height loss.
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