Table 3.
Comparison in total body water values obtained by using deuterium dilution (TBWDeut) and bioelectrical impedance analysis (TBWBIA).
| Time point | Mean ± SD1 |
HIV-negative Difference ± SD |
P 2 | Mean ± SD |
HIV-positive Difference ± SD |
P | Mean ± SD |
Combined Difference ± SD |
P 2 |
|---|---|---|---|---|---|---|---|---|---|
| 1st Trimester | |||||||||
| TBWDeut | 29.4 ± 4.8 | 30.6 ± 3.7 | 30.0 ± 4.3 | ||||||
| TBWBIA | 28.5 ± 3.3 | −0.95 ± 2.64 | 0.06 | 29.2 ± 2.8 | −1.47 ± 2.04 | 0.0007 | 28.8 ± 3.0 | −1.20 ± 2.36 | 0.0003 |
| 2nd Trimester | |||||||||
| TBWDeut | 31.0 ± 3.4 | 33.9 ± 4.9 | 32.4 ± 4.4 | ||||||
| TBWBIA | 30.2 ± 2.8 | −0.78 ± 2.29 | 0.13 | 31.2 ± 4.0 | −2.69 ± 2.23 | <0.0001 | 30.7 ± 3.4 | −1.66 ± 2.43 | <0.0001 |
| 3rd Trimester | |||||||||
| TBWDeut | 33.9 ± 4.1 | 35.0 ± 4.5 | 34.4 ± 4.2 | ||||||
| TBWBIA | 31.3 ± 3.2 | −2.54 ± 2.61 | 0.0003 | 32.3 ± 4.1 | −2.71 ± 2.72 | 0.0008 | 31.8 ± 3.6 | −2.62 ± 2.62 | <0.0001 |
| 10 wks postpartum | |||||||||
| TBWDeut | 29.9 ± 3.1 | 29.1 ± 5.1 | 29.5 ± 4.2 | ||||||
| TBWBIA | 29.3 ± 2.4 | −0.64 ± 1.59 | 0.08 | 28.9 ± 3.2 | −0.20 ± 2.51 | 0.72 | 29.1 ± 2.8 | −0.43 ± 2.07 | 0.19 |
1
All values shown in kg;
2
Based on paired t-test.