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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 treatment

Scores after 6 months of treatment

Number of cases

2

1

4

2

2

2

3

1

4

3

2

4

3

3

1

4

1

1

4

2

1

5

0

1

5

1

2

(B) Changes of CT paving stone signs score before treatment and after 12 months of treatment (n = 17)

Scores before treatment

Scores after 12 months of treatment

Number of cases

2

1

3

2

2

1

3

1

5

3

2

1

3

3

2

4

3

1

4

1

1

5

1

2

5

2

1

  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)