Table 1 Characteristics of participants (n = 493).

From: Prevalence and risk factors of secondhand smoke (SHS) exposure among pregnant women in Mongolia

Maternal age (years)

27.8 ± 6.0

Marital status

Single (Divorced, Bereaved)

103

(20.9)

Married

385

(78.1)

Missing

5

(1.0)

Educational attainment

Low (≤Lower secondary school)

42

(8.5)

Middle (Upper secondary school)

181

(36.7)

High (≥University)

264

(53.6)

Missing

6

(1.2)

Employment status

Employed

192

(39.0)

Self-employed

71

(14.4)

Nomad

13

(2.6)

Unemployed

210

(42.6)

Missing

7

(1.4)

Monthly household income a

≤ ₮400,000

141

(28.6)

₮410,000–800,000

237

(48.1)

≥₮810,000

97

(19.7)

Missing

18

(3.6)

Nomadic status

Sedentary

440

(89.3)

Nomadic/semi-nomadic

43

(8.7)

Missing

10

(2.0)

Type of dwelling

Detached house

140

(28.4)

Condominium

236

(47.9)

Ger

92

(18.7)

Others

20

(4.0)

Missing

5

(1.0)

Number of family membersb

3.7 ± 1.3

Number of children living togetherc

1.4 ± 1.1

Gestational age at recruitementd

13.1 ± 5.0

  1. Data are shown as mean ± standard deviation or n (%). a₮20,000  US$10. bMissing for 21 participants. cMissing for 49 participants. dMissing for 1 participant.