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Table 1 Factor loadings of depression search index in Baidu

From: The association between PM2.5 exposure and suicidal ideation: a prefectural panel study

VariablesISI-1UniquenessISI-2Uniqueness
“I want suicide”0.6810.5370.7420.449
“I would like to commit suicide”0.4150.8280.4980.752
“How to commit suicide”0.6950.5180.7410.451
“Suicidal methods”0.670.5510.7310.465
“Methods of suicide”0.6610.5640.7280.471
suicide0.7680.41  
wrist cutting0.7120.492  
hang oneself0.7090.498  
charcoal-burning0.5560.691  
self-burning0.4530.795  
jump to death0.7330.463  
cutting one’s own throat0.5740.67  
lay on the railway0.5430.706  
attempt suicide0.0850.993  
suicide (suicide)0.7690.408  
Death ends all trouble0.5550.692  
Eigenvalue6.186 2.412 
Variance (%)38.66 48.23 
Cronbach’s Alpha0.818 0.723 
  1. Note. Principal component factor analysis. For ISI-1, KMO = 0.965 Bartlett’s test of sphericity = 5.23e+ 05 (120), p < 0.001. For ISI-2, KMO = 0.799 Bartlett’s test of sphericity =95,837.689 (10), p < 0.001