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Table 2 The results of the decomposition analysis of socioeconomic inequality in drug use for men and women in Iran

From: Prevalence of drug use, alcohol consumption, cigarette smoking and measure of socioeconomic-related inequalities of drug use among Iranian people: findings from a national survey

Variables Men Women
adjusted OR Elasticity Concentration Index (Ck) Absolute Contribution Percentage contribution Summed Percentage contribution Adjusted OR Elasticity Concentration Index
(Ck)
Absolute Contribution Percentage contribution Summed percentage contribution
Age group
(Ref: 35–40)
41–45 0.65 (0.38_1.9) 0.0397 0.0549 0.0029 −2.1394 −0.42 3.58 (0.54_10.31) 0.0127 0.0953 0.0012 −0.7068 9.76
46–50 1.10 (0.81_1.49) 0.0524 0.0581 0.0040 −2.9949 3.24 (0.48_4.49) 0.0191 0.0424 0.0008 − 0.4737
51–55 1.09(0.94_1.26) 0.0414 0.0258 0.0014 −1.0482 1/17(0.30_7.28) 0.0299 −0.0382 −0.0012 0.6673
55–60 1.15(0.91_1.44) 0.0309 −0.0766 −0.0031 2.3274 1.51 (0.17_5.9) 0.0314 −0.1555 −0.0050 2.8559
61–65 1.28 (1.07_1.51) 0.0141 − 0.1681 − 0.0031 2.3376 0.24 (0.29_1.96) 0.0250 −0.2841 − 0.0073 4.1537
>  66 1.09(0.94_1.26) 0.0037 −0.3014 −0.0015 1.1017 2.70 (1.12_6.42) 0.0135 −0.3869 −0.0053 3.0459
Marital status
(Ref: Married)
Single 0.73 (0.49_1.07) −0.0007 −0.0680 0.0001 −0.0473 0.17 0.21 (0.12_0.39) −0.0060 −0.0687 0.0004 −0.2410 0.25
Divorce/widowed 1.53 (1.02_2.28) 0.0015 −0.1499 −0.0003 0.2171 1.64 (1.58_2.03) 0.0032 −0.2633 −0.0008 0.4860
Smoking status
(Ref: Never smoker)
current smoker 5.75 (5.10_6.47) 0.3271 −0.0875 −0.0377 28.1203 32.04 0.28 (0.22_0.38) 0.0160 −0.3203 −0.0052 2.9986 4.34
Former smoker 3.92 (3.41_4.50) 0.0932 −0.0428 − 0.0053 3.9201 1.69 (1.24_2.31) 0.0060 −0.3571 −0.0022 1.2429
Alcohol consumption
(Ref: No)
Yes 6.97 (2.39_20.2) 0.1444 0.0872 0.0166 −12.3680 −12.37 8.80 (7.80_9.92) 0.0023 0.4644 0.0011 −0.6310 −0.65
water pipe Smoking (Ref: No) Yes 1.58 (1.42_1.74) 0.0717 0.1209 0.0114 −8.5231 −8.52 2.27 (1.61_3.21) 0.0173 0.0683 0.0012 −0.6924 −0.71
Physical activity Daily METs
(Ref: 24–36.5)
36.6–44.9 0.83 (0.74_0.93) −0.0335 0.0776 −0.0034 2.5546 −0.80 0.63 (0.56_0.69) −0.0305 0.0575 −0.0018 1.0260 1.17
≥45 0.77 (0.68_0.87) −0.0175 −0.1955 0.0045 −3.3585 0.60 (0.50_0.72) 0.0010 −0.1866 −0.0002 0.1144
Socioeconomic status
(Ref: 1st quintile (the poorest)
2nd quintile 0.76 (0.62_0.91) −0.0122 −0.5276 0.0085 −6.3293 80.04 0.78 (0.64_0.84) −0.0186 −0.2965 0.0056 −3.2268 26.37
3rd quintile 0.63 (0.52_0.76) −0.0225 −0.1407 0.0042 −3.1165 0.69 (0.55_0.74) −0.0235 0.1149 −0.0028 1.5769
4th quintile 0.53 (0.43_0.64) −0.0408 0.2804 −0.0151 11.2458 0.61 (0.41_0.66) −0.0271 0.4974 −0.0138 7.8742
5thquintile
(the richest)
0.31 (0.25_0.37) −0.1063 0.7491 −0.1048 78.2428 0.39 (0.30_0.45) −0.0399 0.8394 −0.0342 19.5650
Province (Ref: Kermanshah (KSH)) Guilan (GU) 1.14 (0.91_1.41) 0.0258 −0.1858 −0.0063 4.7054 −0.97 24.09 (16.8_28.9) 0.1341 −0.1373 −0.0188 10.7623 −22.38
Fars (FA) 7.46 (5.91_9.41) 0.2125 −0.3701 −0.1035 77.2690 12.18 (6.01_24.6) 0.0711 −0.3848 −0.0280 15.9918
East Azerbaijan (EA) 0.39 (0.31_0.49) −0.0084 −0.0375 0.0004 −0.3086 0.40 (0.13_1.22) −0.0034 0.0124 0.0000 0.0247
Mazandaran (MA) 1.32 (1.02_1.70) 0.0232 0.1624 0.0050 −3.7020 4.36 (2.03_9.31) 0.0155 0.1544 0.0025 −1.4028
Sistan and Balouchestan (SB) 6.44 (4.26_9.71) 0.0847 0.0507 0.0057 −4.2201 17.15 (13.39_19.24) 0.1693 0.0303 0.0052 −2.9998
Yazd (YA) 5.85 (4.53_7.55) 0.0827 0.1501 0.0164 −12.2018 7.92 (3.77_14.24) 0.0269 0.1959 0.0054 −3.0760
Kerman (KE) 7.91 (6.26_9.97) 0.1505 0.2663 0.0528 −39.3871 19.21 (16.62_24.39) 0.1840 0.3169 0.0596 −34.1030
Khouzestan (KH) 2.03 (1.32_3.09) −0.0013 −0.1443 0.0002 −0.1781 0.49 (0.14_1.61) −0.0025 − 0.2012 0.0005 − 0.2906
Chaharmahal and Bakhtiari (CB) 2.62 (2.07_3.30) 0.0328 0.4504 0.0194 −14.5110 10.01 (7.51_13.91) 0.0224 0.4702 0.0108 −6.1554
Hormozgan (HO) 0.96 (0.87_1.12) 0.0019 −0.0463 −0.0001 0.0865 4.02 (1.6_9.85) 0.0027 −0.0538 −0.0001 0.0838
West Azerbaijan (WA) 1.06 (0.62_1.46) 0.0034 −0.1115 −0.0005 0.3721 2.47 (0.92_6.53) 0.0020 −0.1677 −0.0003 0.2001
Ardabil (AR) 0.85 (0.73_1.51) 0.0086 0.2446 0.0028 −2.0755 1.89 (0.78_4.55) 0.0038 0.2240 0.0009 −0.4950
RazaviKhorasan (RK) 1.77 (0.64_1.12) 0.0110 0.5949 0.0086 −6.4323 11.82 (9.2_13.90) 0.0229 0.6878 0.0161 −9.2199
Kohgiluyeh and Boyer-Ahmad (KB) 0.65 (0.80_3.90) 0.0016 0.2434 0.0005 −0.3888 16.93 (14.1_18.29) 0.0024 0.2488 0.0006 −0.3454
Summed      −0.1193   89.17     −0.0151   18.15
Residual      −0.0147   10.83     0.1559   81.85
The Cn      −0.1340   100.00     0.171 −0.1710 100.00