Author

Subject group

n

BIA- parameter

Instrument

Comments/ appreciation

Limitations                                                         

Sanchez-Lara et al. [86]

Advanced Non-Small-Cell Lung Cancer 119

PhA

RJL

Patient with Phase angle ≤5.8° has significant (p<0.01) poor survival.

Controlled clinical trial

Malecka-Massalska  et al. [87]

 

Head and neck cancer
Healthy volunteers

28
28

PhA

ImpediMed
BIA

Mean vectors of H and NC group vs. the control group were characterized by an increased normalized resistance component with a reduced reactance component (separate 95% confidence limits, P<0.05), indicating a decreased ionic conduction (dehydration) with loss of dielectric mass (cell membranes and tissue interfaces) of soft tissue.

Controlled clinical trial

Norman et al. [88]

Cancer

399

PhA

BIA

Patients with a phase angle ≤ 5° had significantly lower nutritional and functional status, impaired quality of life (P lt 0.0001), and increased mortality (P lt 0.001).

Controlled clinical trial

Paiva et al. [89]

Cancer

195

PhA

BIA

The present study demonstrates that PA, used as SPA, is an independent prognostic indicator. Patients with PA < -1.65° still presented a higher mortality rate (RR 2.35 CI: 1.41-3.90; p = 0.001).

Prospective cohort

Santarpia et al.  [90]

Advanced cancer

13

PhA

BIA

Phase angle =0.384, P=0.024) was found to be strictly related to survival time and can be therefore considered a prognostic tool in patients with advanced cancer.

prospective study: small sample size

Davis et al. [91]

Advanced cancer

50

PhA

underwent BIA

Weight loss was associated with shorter survival. A higher phase angle (PA) on day 1 predicted longer survival. Increased PA during hydration predicted shorter survival: increased weight during hydration predicted longer survival. An increase in phase angle during hydration predicted poorer survival and preexisting intracellular dehydration, cachexia, or poor membrane function.

Controlled clinical trial

Gupta et al.  [92]

advanced NSCLC

165

PhA

BIA

Patients with phase angle ≤ 5.3° had a median survival of 7.6 months (95% CI: 4.7 to 9.5; n = 81), while those with > 5.3° had 12.4 months (95% CI: 10.5 to 18.7; n = 84); (p = 0.02). Every one degree increase in phase angle was associated with a relative risk of 0.79 (95% CI: 0.64 to 0.97, P = 0.02).
N.P. Nutritional interventions targeted at improving phase angle could potentially lead to an improved survival in patients with advanced non-small cell lung cancer (advanced NSCLC).

Prospective clinical trial

Table 3: BIA studies showing an association between Phase Angle (PhA) and survival in cancer patients.