Table 2

Logistic regression of gender, age, number of chronic medical conditions, social factors on depression

Variable
N
Freq. (%)/Mean (SD)
Crude Odds ratio (95% CI)
Adj. Odds ratio (95% CI) of model 11
Adj. Odds ratio (95% CI) of model 22








Controls
Depressed




N
3394
3114 (91.8%)
280 (8.2%)



Sex






     Male
1901
1747 (91.9%)
154 (8.1%)
1
1
1
     Female
1493
1367 (91.6%)
126 (8.4%)
1.05 (0.82, 1.34)
0.69 (0.47, 1.02)
1.27 (0.83, 1.94)
Age






     65–69
1211
1118 (92.3%)
93 (7.7%)
1
1
1
     70–74
1204
1111 (92.3%)
93 (7.7%)
1.01 (0.75, 1.36)
0.78 (0.54, 1.13)
0.75 (0.50, 1.12)
     75 or above
979
885 (90.4%)
94 (9.6%)
1.28 (0.95, 1.72)
0.94 (0.64, 1.39)
1.03 (0.67, 1.56)
No. of chronic diseases*
3394
2.3 (1.6)
3.1 (1.7)
1.27 (1.19, 1.36)
1.29 (1.19, 1.41)
1.27 (1.16, 1.39)
Current marital status






     Married or living in a married-like relationship
2541
2358 (92.8%)
183 (7.2%)
1
1
1
     Single/Divorced/separated/widowed
853
756 (88.6%)
97 (11.4%)
1.65 (1.28, 2.14)
1.72 (1.20, 2.47)
1.43 (0.97, 2.12)
Education level






     No education
494
445 (90.1%)
49 (9.9%)
1
1
1
     Primary or below
1791
1626 (90.8%)
165 (9.2%)
0.92 (0.66, 1.29)
0.97 (0.61, 1.53)
0.95 (0.58, 1.58)
     Secondary or above
1109
1043 (94.1%)
66 (6.0%)
0.57 (0.39, 0.85)
0.75 (0.44, 1.25)
1.00 (0.57, 1.77)
Max income






     0–1999
596
545 (91.4%)
51 (8.6%)
1
1
1
     2000–5999
579
520 (89.8%)
59 (10.2%)
1.21 (0.82, 1.80)
1.18 (0.78, 1.78)
1.07 (0.68, 1.67)
     6000–11999
688
632 (91.9%)
56 (8.1%)
0.95 (0.64, 1.41)
0.97 (0.61, 1.53)
1.07 (0.66, 1.74)
     12000 or above
694
664 (95.7%)
30 (4.3%)
0.48 (0.30, 0.77)
0.52 (0.30, 0.90)
0.71 (0.40, 1.26)
SES ladder – HK*
3394
4.7 (1.8)
3.3 (1.8)
0.65 (0.60, 0.70)
-
0.75 (0.67, 0.83)
SES ladder – community*
3394
6.9 (2.1)
5.2 (2.6)
0.71 (0.67, 0.76)
-
0.76 (0.70, 0.82)

*odd ratio representing per 1 unit increase

1model 1 includes all variables except SES ladders

2model 2 includes all variables

Wong et al. BMC Public Health 2008 8:119   doi:10.1186/1471-2458-8-119