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

Moradinazar, Mehdi; Najafi, Farid; Jalilian, Farzad; Pasdar, Yahya; Hamzeh, Behrooz; Shakiba, Ebraim; Hajizadeh, Mohammad; Haghdoost, Ali Akbar; Malekzadeh, Reza; Poustchi, Hossein; Nasiri, Marzeyeh; Okati-Aliabad, Hassan; Saeedi, Majid; Mansour-Ghanaei, Fariborz; Farhang, Sara; Safarpour, Ali Reza; Maharlouei, Najmeh; Farjam, Mojtaba; Amini, Saeed; Amini, Mahin; Mohammadi, Ali; Mirzaei-Alavijeh, Mehdi

doi:10.1186/s13011-020-00279-1

Substance Abuse Treatment, Prevention, and Policy

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
Variables		adjusted OR	Elasticity	Concentration Index (C_k)	Absolute Contribution	Percentage contribution	Summed Percentage contribution	Adjusted OR	Elasticity	Concentration Index (C_k)	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
Marital status (Ref: Married)	Divorce/widowed	1.53 (1.02_2.28)	0.0015	−0.1499	−0.0003	0.2171	0.17	1.64 (1.58_2.03)	0.0032	−0.2633	−0.0008	0.4860	0.25
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
Smoking status (Ref: Never smoker)	Former smoker	3.92 (3.41_4.50)	0.0932	−0.0428	− 0.0053	3.9201	32.04	1.69 (1.24_2.31)	0.0060	−0.3571	−0.0022	1.2429	4.34
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
Physical activity Daily METs (Ref: 24–36.5)	≥45	0.77 (0.68_0.87)	−0.0175	−0.1955	0.0045	−3.3585	−0.80	0.60 (0.50_0.72)	0.0010	−0.1866	−0.0002	0.1144	1.17
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 C_n					−0.1340		100.00				0.171	−0.1710	100.00

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