As shown in Table 3, except for age (power = 0.597) and ATBL diameter (power = 0.769), the power of all other key variables (CD4+ T-cell count, miliary PTB, upper para-aortic region involvement, portacaval space involvement, hepatogastric ligament involvement, abdominal distension, AFB smear positivity, and disseminated TB) all exhibited sufficient statistical power (≥0.8). The gene discussed is CD4; the disease is tuberculosis.