Group X2 p-value
BMP (n=401) Control (n=366)
No. % No. %
Age (years):
<21 29 7.2 28 7.7    
21- 139 34.7 192 52.5    
30- 152 37.9 102 27.9    
40+ 81 20.2 44 12.0    
Range 18-63 18-64    
Mean ± SD 31.9 ± 8.4 29.1 ± 8.0 t=4.61 <0.001*
Total educational years:
<6 13 3.2 27 7.4    
6-9 261 65.1 244 66.7 9.57 0.02*
10-15 94 23.4 76 20.8    
16+            
Range 0-16 0-16    
Mean ± SD 9.3 ± 3.1 8.5 ± 3.2 t=3.48 0.001*
Marital status:
Single 252 62.8 246 67.2    
Married 101 25.2 105 28.7 15.87 <0.001*
Divorced/separated/widow 48 12.0 15 4.1    
Current job:            
Professional 16 4.0 10 2.7    
Clerical 28 7.0 39 10.7    
Skilled 48 12.0 90 24.6    
Trade (self business) 18 4.5 24 6.6 33.59 <0.001*
Never attended a job 27 6.8 23 6.3    
Jobless 257 64.3 171 46.7    
Retired 6 1.5 9 2.5    
Job status:
Unemployed 290 72.3 203 55.5    
Working 111 27.7 163 44.5 23.67 <0.001*
(*) Statistically significant at p<0.05
Table 1: Comparison of the socio-demographic characteristics of patients in the study group (BMP) and control group.
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