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Table 4 The frequency of consumption of drinks and foods, and special drinking habits in relation to the prevalence of dental erosion

From: The prevalence of dental erosion and associated risk factors in 12-13-year-old school children in Southern China

Variables Total No. of children Dental erosion  
   No. of children % P
Frequency of carbonated drinks*     
   < once a week 936 243 26.0 0.046
   ≥once a week 563 173 30.7  
Frequency of sport drinks     
   < once a week 1089 305 28.0 0.719
   ≥once a week 410 111 27.1  
Frequency of lemon tea     
   < once a week 1102 310 28.1 0.585
   ≥once a week 397 106 26.7  
Frequency of succade     
   < once a week 1160 314 27.1 0.275
   ≥once a week 339 102 30.1  
Frequency of fruits     
   < once a week 180 52 28.9 0.716
   ≥once a week 1319 364 27.6  
Frequency of fruit juices     
   < once a week 940 253 26.9 0.348
   ≥once a week 559 163 29.2  
Frequency of chewing gum     
   < once a week 817 233 28.5 0.468
   ≥once a week 682 183 26.8  
Amount of acidic drinks intake     
   < 250 ml/week 408 103 25.2 0.406
   250-1000 ml/week 962 275 28.5  
   > 1000 ml/week 129 38 29.4  
Drinking with straw or not     
   Drinking with straw 475 138 29.2 0.444
   Drinking without straw 1024 278 27.1  
Method of drinking     
   Sucking or holding drinks in mouth 328 81 24.7 0.162
   Drinking straight away 1171 335 28.6  
Frequency of drinks taken at night     
   Once or more monthly 82 26 31.7 0.418
   Never/occasionally 1417 390 27.5  
  1. *P < 0.05, Chi-square test