Table 4: Presence of clue cells in relation to Nugent’s scoring system and Hay’s classification system.

Clue cells value
Odds ratio
PositiveNegative

Nugent’s score
 7–10704921<0.001
 4–636234164.5
 0–31070107

Hay’s score
 III875037<0.001
 II23122168.9
 I1030103