Socioeconomic inequality in tobacco expenditure in Iran: a cross-sectional analysis at national and subnational levels

Table 2 The concentration indices for TEHB for whole sample, rural and urban areas and province category based on HDI in Iran

Sample	N	C	95% Confidence interval
National level	7649	− 0.1423	− 0.1552 to − 0.1301
Urban/rural status
Urban area	3592	−0.1707	− 0.1898 to − 0.1516
Rural area	4057	− 0.1314	− 0.1474 to − 0.1152
Province category based on HDI
Low^*	2773	−0.1463	− 0.1662 to − 0.1264
Middle^**	2553	− 0.1452	− 0.1651 to − 0.1252
High^***	2323	− 0.1189	−0.1430 to − 0.0949

Note: TEHB is the tobacco expenditure as the share of the household budget; HDI is the human development index; C is the concentration index. Low*: Sistan and Baluchestan, Kurdistan, North Khorasan, South Khorasan, West Azerbaijan, Ardebil, Hormozgan, Zanjan, Hamadan, Golestan, Kerman provinces; Middle**: Razavi Khorasan, Lorestan, East Azerbaijan, Markazi, Kohgiluyeh Buyer Ahmad, Kermanshah, Chahar Mahall and Bakhtiari, Qazvin, Khuzestan, Gilan provinces; High***: Fars, Bushehr, Ilam, Qom, Semnan, Yazd, Mazandaran, Esfahan, Tehran, Alborz provinces

ISSN: 1471-2458