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Table 4 Current pregnancy characteristics according to maternal self-reported tobacco use (N = 73)

From: Central Australian Aboriginal women’s pregnancy, labour and birth outcomes following maternal smokeless tobacco (pituri) use, cigarette use or no-tobacco use: a prospective cohort study

Variable Maternal self-reported tobacco use
Total
N = 73
No-tobacco use
n = 31
Chewer
n = 19
Smoker
n = 23
n (col %, 95 Confidence interval)
Number of antenatal visits
 1–3 10 (16, 9–28) 4 (14, 5–33) 2 (13, 3–43) 4 (21, 8–46)
 4–7 17 (27, 18–40) 8 (29, 15–48) 5 (33, 14–61) 4 (21, 8–46)
 8 and more 35 (56, 44–68) 16 (57, 38–74) 8 (53, 28–77) 11 (58, 35–78)
 Missinga 11 3 4 4
 Median, (Range) 8, (1–20) 8.5, (1–18) 8, (2–20) 9, (2–16)
Gestation at 1st antenatal visit in weeks
 < 14 weeks 32 (50, 38–62) 15 (58, 38–75) 5 (29, 12–56) 12 (57, 35–77)
 14–26 weeks 23 (36, 25–49) 7 (27, 13–48) 11 (65, 39–84) 5 (24, 10–47)
 > 27 weeks 9 (14, 7–25) 4 (15, 6–36) 1 (6, 1–34) 4 (19, 7–42)
 Missinga 9 5 2 2
 Median, (Range) 14, (5–38) 12.5, (5–35) 18, (7–31) 12, (5–38)
Gestation at 1st ultrasound in weeks
 < 14 31 (46, 34–59) 15 (54, 35–71) 5 (29, 12–55) 11 (50, 29–71)
 14–26 27 (40, 29–53) 11 (39, 23–59) 10 (59, 34–80) 6 (27, 12–50)
 > 27 9 (13, 7–24) 2 (7, 2–25) 2 (12, 3–39) 5 (23, 9–45)
 Missinga 6 3 2 1
 Range 15, (6–37) 12.5, (6–31) 16, (7–30) 14.5, (6–37)
Elevated glucoseb
 Yes 19 (26, 17–38) 5 (16, 7–34) 9 (47, 26–70) 5 (22, 9–44)
 No 54 (74, 62–83) 26 (84, 66–93) 10 (53, 30–74) 18 (78, 56–91)
 Odds ratio (95%CI) of elevated glucose Reference group 4.68 (1.26–17.42) 1.44 (0.36–5.73)
Hypertensionb
 Yes 13 (18, 10–29) 7 (23, 11–41) 1 (5, 1–31) 5 (22, 9–44)
 No 60 (82, 71–90) 24 (77, 59–89) 18 (95, 69–99) 18 (78, 56–91)
Anemia
 Yes 15 (21, 13–32) 8 (26, 13–44) 1 (5, 1–31) 6 (26, 12–48)
 No 58 (79, 68–87) 23 (74, 56–87) 18 (95, 69–99) 17 (74, 52–88)
Sexually transmitted infection
 Yes 14 (19, 12–30) 6 (19, 9–38) 6 (32, 14–56) 2 (9, 2–30)
 No 59 (81, 70–88) 25 (81, 62–91) 13 (68, 44–86) 21 (91, 70–98)
Urinary tract infection
 Yes 8 (11, 5–21) 3 (10, 3–26) 3 (16, 5–40) 2 (9, 2–30)
 No 65 (89, 79–95) 28 (90, 73–97) 16 (84, 60–85) 21 (91, 70–98)
Renal disease
 Yes 3 (4, 1–12) 3 (10, 3–27) 0 0
 No 70 (96, 88–99) 28 (90, 73–97) 19 (100, −) 23(100, −)
Cardiac disease
 Yes 7 (10, 5–19) 4 (13, 5–30) 1 (5, 1–31) 2 (9, 2–30)
 No 66 (90, 81–95) 27 (87, 70–95) 18 (95, 69–99) 21 (91, 70–98)
  1. aMissing data not included in percentage
  2. bCARESYS® data not specific to identify if condition was pre-existing or gestational