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Table 4 Odds ratio (OR) for the association between plaque accumulation and poor (underachieve) 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 n (%) Fair/Good/Excellent n (%) Total OR (95% CI) p
Age 6–7
 Yes 23 (9.9) 210 (90.1) 233 1.0 (0.52, 1.92) > 0.9
 No 24 (9.8) 220 (90.2) 244 1  
Age 10–11
 Yes 10 (6.6) 142 (93.4) 152 1.6 (0.59, 4.43) 0.3
 No 10 (4.2) 229 (95.8) 239 1