Body Weight Variability and Risk of Suicide Mortality: A Nationwide Population-Based Study
Table 2
The risk of suicide according to the quartiles of body weight variability.
Variability
Events
Incidence rate
Model 1
Model 2
Model 3
Model 4
VIM
Q1
495353
1347
0.24
1 (reference)
1 (reference)
1 (reference)
1 (reference)
Q2
496832
1340
0.24
0.99 (0.92-1.07)
1.03 (0.95-1.11)
1.02 (0.94-1.10)
1.01 (0.94-1.09)
Q3
495595
1473
0.27
1.10 (1.02-1.18)
1.16 (1.08-1.25)
1.14 (1.06-1.23)
1.12 (1.04-1.20)
Q4
495921
1723
0.32
1.30 (1.21-1.40)
1.46 (1.36-1.56)
1.39 (1.29-1.49)
1.35 (1.26-1.45)
for trend
<0.001
<0.001
<0.001
<0.001
ASV
Q1
540752
1440
0.24
1 (reference)
1 (reference)
1 (reference)
1 (reference)
Q2
477320
1315
0.25
1.03 (0.56-1.11)
1.01 (0.94-1.09)
1.01 (0.93-1.09)
1.02 (0.95-1.10)
Q3
468980
1424
0.27
1.15 (1.07-1.23)
1.11 (1.03-1.19)
1.08 (1.00-1.16)
1.11 (1.03-1.19)
Q4
496649
1704
0.31
1.30 (1.22-1.40)
1.29 (1.20-1.38)
1.22 (1.14-1.31)
1.29 (1.20-1.38)
for trend
<0.001
<0.001
<0.001
<0.001
CV
Q1
495895
1358
0.25
1 (reference)
1 (reference)
1 (reference)
1 (reference)
Q2
495524
1319
0.24
0.97 (0.90-1.10)
1.01 (0.94-1.09)
1.01 (0.93-1.08)
0.99 (0.92-1.07)
Q3
496139
1489
0.27
1.10 (1.02-1.18)
1.17 (1.10-1.26)
1.15 (1.07-1.24)
1.13 (1.05-1.21)
Q4
496143
1717
0.32
1.28 (1.19-1.38)
1.46 (1.36-1.57)
1.39 (1.29-1.49)
1.34 (1.25-1.44)
for trend
<0.001
<0.001
<0.001
<0.001
Per 1000 person-years. Model 1: unadjusted. Model 2: adjusted for age, sex, income, alcohol drinking, smoking, and regular exercise. Model 3: adjusted for model 2 plus diabetes, hypertension, dyslipidemia, chronic kidney disease, depression, bipolar disease, schizophrenia, anxiety, and insomnia. Model 4: adjusted for model 3 plus body mass index. ASV: average successive variability; CV: coefficient of variation; VIM: variability independent of the mean.
