Table 4.

Mean TBW (L)/BW (kg) in each group

Age group (yr)	No. of patients	Normal weight		Excessive weight
		Male	Female	Male	Female
3–10	160	0.63 ± 0.05	0.62 ± 0.04	0.53 ± 0.07	0.49 ± 0.08
		0.63 (0.62–0.65)	0.63 (0.59–0.65)	0.53 (0.47–0.59)	0.50 (0.43–0.57)
BMI (kg/m2)		15.7 ± 1.3	15.9 ± 1.6	21.5 ± 3.7	23.5 ± 5.4
11–20	186	0.63 ± 0.05	0.56 ± 0.05a	0.49 ± 0.07	0.45 ± 0.07
		0.64 (0.59–0.67)	0.56 (0.52–0.60)	0.48 (0.45–0.55)	0.45 (0.40–0.49)
BMI (kg/m2)		19.7 ± 2.6	19.6 ± 2.7	30.7 ± 7.3	32.5 ± 11.6
21–60	100	0.62 ± 0.03	0.54 ± 0.05b	0.49 ± 0.08c	0.41 ± 0.04c
		0.64 (0.60–0.65)	0.53 (0.50–0.58)	0.51 (0.42–0.55)	0.42 (0.37–0.44)
BMI (kg/m2)		21.3 ± 2.2	22.2 ± 1.9	34.8 ± 8.99	34.5 ± 5.2
≥61	99	0.57 ± 0.05d	0.50 ± 0.05d	0.50 ± 0.06	0.43 ± 0.06
		0.58 (0.54–0.60)	0.49 (0.48–0.53)	0.50 (0.47–0.55)	0.43 (0.38–0.46)
BMI (kg/m2)		22.2 ± 1.3	21.4 ± 2.1	31.1 ± 5.5	31.1 ± 5.1

Data are expressed as number only, mean ± standard deviation, or median (interquartile range).

Normal weight, BMI of 85th percentile in children and <25 kg/m² in adults. Excessive weight includes individuals with overweight as well as obesity (BMI of ≥85th percentile in children and ≥25 kg/m² in adults).

BMI, body mass index; BW, body weight; TBW, total body water.

^ap < 0.01 by comparing TBW% in normal weight in female between the groups aged 11–20 years and 3–10 years. The TBW% significantly reduced in the group aged 11–20 years.

^bp < 0.01 by comparing TBW% in normal weight in female between the groups aged 21–60 years and 3–10 years. The TBW% significantly reduced in the group aged 21–60 years.

^cp < 0.05 by comparing TBW% in excessive weight in male or female in different age groups. The TBW% significantly reduced in the group aged 21–60 years.

^dp < 0.01 by comparing TBW% in normal weight in male or female in different age groups. The TBW% significantly reduced in the group aged ≥61 years.