Table 4 The associations of drinking water and dietary habits with number of natural teeth stratified by sex※
Models | Males (N = 8,984) | Females (N = 10,912) | ||
|---|---|---|---|---|
P | β (95 % CI) | P | β (95 % CI) | |
Model 1 | ||||
Drinking habits | ||||
Un-boiled water | Ref | Ref | ||
Boiled water | 0.563 | 0.150(-0.357 ~ 0.656) | 0.522 | 0.124(-0.255 ~ 0.503) |
Model 2 | ||||
Drinking water sources at around 60 years | ||||
Tap water | Ref | Ref | ||
Well | < 0.001 | -1.181(-1.447~ -0.916) | < 0.001 | -0.878(-1.099~ -0.658) |
Surface water | < 0.001 | -1.060(-1.456~ -0.664) | < 0.001 | -0.715(-1.017~ -0.414) |
Spring | < 0.001 | -1.433(-2.038~ -0.829) | < 0.001 | -1.235(-1.725~ -0.745) |
Model 3 | ||||
Staple food | Ref | |||
Rice | Ref | |||
Corn | 0.711 | -0.110(-0.693 ~ 0.473) | 0.007 | -0.601(-1.035~ -0.167) |
Wheat | < 0.001 | -0.584(-0.871~ -0.296) | < 0.001 | -0.813(-1.042~ -0.584) |
Rice and wheat | 0.637 | 0.082 (-0.260 ~ 0.424) | 0.708 | 0.053 (-0.226 ~ 0.332) |
Model 4 | ||||
Frequency of intake fresh fruit | ||||
Almost everyday | Ref | Ref | ||
Quite often | 0.111 | -0.323(-0.720 ~ 0.074) | 0.175 | -0.221(-0.540 ~ 0.098) |
Occasionally | < 0.001 | -0.739(-1.090~ -0.388) | 0.003 | -0.419(-0.699~ -0.139) |
Rarely or never | < 0.001 | -1.185(-1.574~ -0.795) | < 0.001 | -0.828(-1.139~ -0.518) |
P for trend | < 0.001 | -0.402(-0.522~ -0.281) | < 0.001 | -0.273(-0.369~ -0.177) |
Model 5 | ||||
Frequency of intake vegetables | ||||
Almost everyday | Ref | Ref | ||
Quite often | < 0.001 | -0.764(-1.031~ -0.496) | < 0.001 | -0.482(-0.699~ -0.264) |
Occasionally | 0.002 | -0.579(-0.939~ -0.220) | 0.001 | -0.474(-0.753~ -0.195) |
Rarely or never | 0.050 | -0.807(-1.615 ~ 0.001) | 0.012 | -0.717(-1.275~ -0.158) |
P for trend | < 0.001 | -0.380(-0.524~ -0.236) | < 0.001 | -0.279(-0.388~ -0.169) |
Model 6 | ||||
Frequency of intake meat | ||||
Almost everyday | Ref | Ref | ||
Occasionally | 0.005 | -0.359(-0.612~ -0.107) | 0.112 | -0.165(-0.368 ~ 0.038) |
Rarely or never | 0.025 | -0.391(-0.732~ -0.050) | 0.254 | -0.146(-0.398 ~ 0.105) |
P for trend | 0.005 | -0.231(-0.393~ -0.068) | 0.176 | -0.085(-0.208 ~ 0.038) |
Model 7 | ||||
Frequency of intake fish | ||||
Almost everyday | Ref | Ref | ||
Occasionally | 0.029 | -0.307(-0.584~ -0.031) | < 0.001 | -0.442(-0.671~ -0.213) |
Rarely or never | 0.001 | -0.531(-0.845~ -0.217) | < 0.001 | -0.717(-0.961 -0.474) |
P for trend | 0.001 | -0.265(-0.423~-0.108) | < 0.001 | -0.352(-0.473~ -0.231) |