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Table 5 Comparisons of CT paving stone sign score before and after treatment

From: Therapeutic effect of subcutaneous injection of low dose recombinant human granulocyte-macrophage colony-stimulating factor on pulmonary alveolar proteinosis

(A) Changes of CT paving stone sign score before treatment and after 6 months of treatment (n = 20)
Scores before treatmentScores after 6 months of treatmentNumber of cases
214
222
314
324
331
411
421
501
512
(B) Changes of CT paving stone signs score before treatment and after 12 months of treatment (n = 17)
Scores before treatmentScores after 12 months of treatmentNumber of cases
213
221
315
321
332
431
411
512
521
  1. Compared with that before treatment, the proportion scores of chest CT paving stone sign improved significantly after 6 months of treatment, with significant difference (z = 3.686, P = 0.000003). Seventeen patients were followed up for 6 months (12 months) after treatment, and their CT scores improved significantly compared with that before treatment, with statistical significance (z = 4.103, P = 0.00004)