Table 2.

Main Characteristics of Pregnant Women by Smoking Status in Argentina

	Nonsmokers, N = 1326 (71.2%)	Spontaneous quitters, N = 174 (9.3%)	Late quitters, N = 63 (3.4%)	Continued smokers, N = 300 (16.1%)	Total, N = 1863 (100.0%)
Age (y)
≤19	274 (21.0%)	38 (22.4%)	14 (22.6%)	59 (19.8%)	385 (21.0%)
20–34	876 (67.0%)	117 (68.8%)	44 (71.0%)	193 (64.8%)	1230 (66.9%)
≥35	158 (12.1%)	15 (8.8%)	4 (6.5%)	46 (15.4%)	223 (12.1%)
Country citizenship	1122 (85.3%)	161 (93.1%)	61 (98.4%)	288 (96.6%)	1632 (88.3%)
Marital status
Married or living with a partner	1080 (82.2%)	134 (77.5%)	46 (74.2%)	225 (76.0%)	1485 (80.5%)
Partner but not living together	74 (5.6%)	9 (5.2%)	5 (8.1%)	22 (7.4%)	110 (6.0%)
Single (divorced, separated, widowed)	160 (12.2%)	30 (17.3%)	11 (17.7%)	49 (16.6%)	250 (13.6%)
Level of education
Incomplete primary school or less	108 (8.4%)	8 (4.8%)	5 (8.5%)	24 (8.2%)	145 (8.0%)
Complete primary school	310 (24.0%)	40 (23.8%)	9 (15.3%)	100 (34.0%)	459 (25.4%)
Incomplete secondary school	442 (34.3%)	70 (41.7%)	29 (49.2%)	107 (36.4%)	648 (35.8%)
Complete secondary school or more	430 (33.3%)	50 (29.8%)	16 (27.1%)	63 (21.4%)	559 (30.9%)
Work status in past year
Employee	294 (23.4%)	47 (29.0%)	26 (41.9%)	79 (27.7%)	446 (25.3%)
Student	49 (3.9%)	9 (5.6%)	1 (1.6%)	7 (2.5%)	66 (3.7%)
Unemployed	924 (73.7%)	107 (66.0%)	35 (56.5%)	201 (70.5%)	1267 (71.9%)
Live with at least one smoker	605 (46.0%)	112 (64.7%)	47 (75.8%)	222 (74.5%)	986 (53.4%)
Trimester of any prenatal care initiation
First	519 (42.7%)	71 (44.1%)	30 (47.6%)	129 (46.9%)	749 (43.7%)
Second	546 (44.9%)	75 (46.6%)	27 (42.9%)	122 (44.4%)	770 (44.9%)
Third	151 (12.4%)	15 (9.3%)	6 (9.5%)	24 (8.7%)	196 (11.4%)
Number of prenatal care visits a	7 (5–9)	7 (5–10)	8 (5–9)	7 (5–9)	7 (5–9)
Multiparous	808 (64.8%)	101 (63.1%)	42 (67.7%)	206 (73.1%)	1157 (66.1%)

^a Median (25th percentile–75th percentile).