Skip to main content

Table 2 Multiple regression analysis of female suicide SMRs and lithium levels in drinking water

From: Association between lithium in tap water and suicide mortality rates in Miyazaki Prefecture

Female β p Adjusted R2
Crude model    
 Log lithium levels 0.154 0.452 − 0.017
Adjusted model    
 Log lithium levels 0.313 0.075 0.34
 Proportion of elderly people 0.628 0.001  
 Proportion of one-person households − 0.099 0.655  
 Annual marriage rate − 0.249 0.477  
 Annual mean income − 0.289 0.308  
 Unemployment rate 0.004 0.984  
 Density of medical doctors per 100,000 people − 0.178 0.476  
 Annual total rainfall 0.295 0.101  
 Proportion of people with a college education or higher − 0.34 0.28