Table 5 Interaction analysis of subgroup variables and serum phosphate clusters.

From: Change trends in serum phosphate levels predict in-hospital mortality in critically ill septic patients

Variables

Multiplicative interaction

Additive interaction

RERI

AP

SI

Age, years

1.003 (0.912, 1.104)

0.05 (−0.098, 0.163)

0.034 (−0.021, 0.114)

1.118 (0.902, 1.385)

Sex

1.056 (0.966, 1.154)

0.032 (−0.07, 0.088)

0.029 (−0.022, 0.113)

1.451 (0.273, 7.709)

Cultivation

0.955 (0.874, 1.043)

−0.032 (−0.156, 0.031)

−0.024 (−0.072, 0.044)

0.915 (0.781, 1.072)

BMI, kg/m2

1.012 (0.919, 1.114)

−0.042 (−0.163, 0.013)

−0.043 (−0.108, 0.062)

NA (NA, NA)

CKD

1.011 (0.914, 1.119)

0.1 (−0.101, 0.314)

0.059 (−0.025, 0.149)

1.172 (0.958, 1.435)

MV

0.838 (0.763, 0.92)

−0.134 (−0.319, −0.026)

−0.074 (−0.13, −0.017)

0.858 (0.78, 0.943)

  1. BMI body mass index, CKD chronic kidney disease, MV mechanical ventilation, RERI relative excess risk due to interaction, AP attributable proportion due to interaction, SI synergy index.
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