Table 1 Data from the regression analysis between the PMA index and SMT items.

From: Development of a novel method to evaluate gingivitis in children by combining rapid saliva test systems

SMT item

r value

Regression coefficient

Standard error

95% confidence interval

P value

Cariogenic bacteria

− 0.063

− 0.057

0.322

− 0.699, 0.585

0.8608

Acidity

− 0.343

− 1.227

0.391

− 2.01, 0.447

0.0025

Buffering capacity

0.535

1.296

0.238

0.822, 1.770

 < 0.0001

White blood cells

0.193

0.695

0.411

− 0.125, 1.510

0.0953

Protein

0.545

1.558

0.279

1.000, 2.110

 < 0.0001

Ammonia

0.238

0.734

0.348

0.041, 1.427

0.0383

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