Accuracy and correlation of bed and standing scale weights in monitoring volume status in heart failure patients

Figures & data

Table 1. Demographic data.

Patients, n	43
Age (mean ± SD)	62 ± 13
Gender
Male, n (%)	28 (65.1)
Female, n (%)	15 (34.9)
Race/ethnicity
White, n (%)	2 (4.7)
Black, n (%)	5 (11.6)
Hispanic, n (%)	35 (81.4)
Asian, n (%)	1 (2.3)

SD: Standard deviation.

Table 2. Weights for study participants.

	Mean ± SD weights (kg)	Difference between in-bed and standing weights (bias ± precision) (kg)	Number of weight differences > ± 0.6 kg	Number of weight differences > ± 2.0 kg	Number of weight differences ≥ ± 4.0 kg
Standing scale	74.0 ± 32.2	NA	NA	NA	NA
Bed weight	74.4 ± 32.5	1.42 ± 1.18	36 (71%)	11 (22%)	3 (5.9%)

NA: Not available; SD: Standard deviation.

Figure 1. Bland–Altman plot for comparison of bed and standing scale weights. The X-axis represents the average weights of each bed and the standing scale weight pair. The Y-axis represents the weight differences between each bed and the standing scale weight pair.

LOA: Limit of agreement.