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Table 6 Men: Daily mean of suicide mortality, and switching into daylight saving time in spring.

From: Relationship between daylength and suicide in Finland

 

Days

1969-80*

1981-2003

  

-1 m

+1 m

-1 m

+1 m

  

M

CI

m

CI

m

CI

m

CI

Finland

All

.097

.089-.106

.111

.102-.121

.104

.097-.111

.117

.110-.124

Helsinki

All

.114

.096-.133

.130

.114-.146

.135

.120-.150

.137

.118-.155

 

T+S+

.120

.061-.180

.160

.100-.219

.129

.084-.173

.140

.102-.177

 

T+S-

.100

.054-.146

.156

.100-.212

.128

.084-.171

.181

.143-.220

 

T-S+

.123

.090-.156

.102

.067-.137

.139

.108-.171

.142

.100-.184

 

T-S-

.144

.044-.243

.127

.061-.194

.180

.114-.246

.108

.080-.136

Oulu

All

.113

.064-.162

.114

.060-.168

.121

.092-.150

.158

.117-.199

 

T+S+

-

-

-

-

-

-

.110

.042-.179

 

T+S-

-

-

-

-

.145

.060-.229

.146

.055-.237

 

T-S+

.123

.037-.208

.152

.013-.291

.104

.038-.171

.21

.139-.280

 

T-S-

-

-

-

-

.065

.002-.129

.138

.039-.237

  1. Daily mean of suicide mortality during one month period before (-1 m), and after (+1 m) the switch into daylight saving time.
  2. * = DST was not in use in Finland
  3. m = daily mean of suicide mortality
  4. CI = confidence interval of the mean