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Table 3 Odds ratio (OR) for the association between plaque accumulation and poor (underachieve/fair) school performance in age groups 6–7 and 10–11 years-old

From: Is there evidence for the impact of poor oral health on school performance?

Substantial plaque Underachieve/Fair n (%) Good/Excellent n (%) Total OR (95% CI) p
Age 6–7
 Yes 58 (24.9) 175 (75.1) 233 1.5 (0.95, 2.40) 0.07
 No 44 (18.0) 200 (82.0) 244 1  
Age 10–11
 Yes 32 (21.1) 120 (79.0) 233 2.0 (1.11, 3.64) 0.01*
 No 28 (11.7) 211 (88.3) 244 1