Table 2 Logistic regression analysis regarding correlations between three malnutrition indexes and stroke-associated pneumonia

PNI

 Absent

179/722 (24.8)

REF

-

REF

-

REF

-

 Mild risk

76/140 (54.3)

3.602 (2.481–5.231)

 < 0.001

2.666 (1.787–3.978)

 < 0.001

2.339 (1.437–3.806)

0.001

 Moderate and severe risk

39/53 (73.6)

8.451 (4.485–15.924)

 < 0.001

6.615 (3.383–12.932)

 < 0.001

4.071 (1.853–8.943)

 < 0.001

CONUT

 Absent

90/420 (21.4)

REF

-

REF

-

REF

-

 Mild risk

169/449 (37.6)

2.213 (1.537–2.991)

 < 0.001

1.909 (1.384–2.634)

 < 0.001

1.636 (1.113–2.406)

0.012

 Moderate and severe risk

35/46 (76.1)

11.667 (5.699–23.884)

 < 0.001

9.658(4.534–20.574)

 < 0.001

6.006 (2.438–14.795)

 < 0.001

GNRI

 Absent

212/767 (27.6)

REF

-

REF

-

REF

-

 Mild risk

47/91 (51.6)

2.796 (1.800–4.344)

 < 0.001

1.923 (1.415–4.997)

0.012

1.709 (1.006–2.904)

0.048

 Moderate and severe risk

35/57 (61.4)

4.165 (2.388–7.264)

 < 0.001

2.659 (1.415–4.997)

0.002

2.556 (1.322–4.943)

0.005