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Table 2 Age, meals per day taken, gender, education, dental visit behaviour and caries experience according to risk to dental erosion of the respondents.

From: Dietary behavior and knowledge of dental erosion among Chinese adults

   Risk to dental erosion  
  All Yes* No p-value
Age (n = 514) 37.1 ± 6.0 36.5 ± 6.3 37.9 ± 5.5 0.008
No. of meals/day (n = 494) 5.4 ± 2.1 5.3 ± 2.0 5.5 ± 2.3 0.355
Gender (n = 520)     0.441
   Male 36% 104 (37%) 82 (34%)  
   Female 64% 175 (63%) 159 (66%)  
Education level (n = 517)     < 0.001
   Primary or below 6% 13 (5%) 20 (9%)  
   Secondary 64% 163 (58%) 167 (70%)  
   Tertiary 30% 103 (37%) 51 (21%)  
Dental visit (n = 499)     0.212
   At least 1/yr 22% 59 (22%) 52 (23%)  
   Less than 1/yr 67% 176 (65%) 157 (69%)  
   Never 11% 36 (13%) 19 (8%)  
Caries experience (n = 520)     0.086
   Yes 79% 212 (76%) 198 (82%)  
   No 21% 67 (24%) 43 (18%)  
  1. * had at least 3 out of the 5 sign and symptoms asked