From: Trends in maternal use of snus and smoking tobacco in pregnancy. A register study in southern Norway
From before pregnancy to first trimester | From before pregnancy to third trimester | |||
---|---|---|---|---|
% | CI | % | CI | |
Snus use, all 16–44 years (N = 824 before pregnancy) | 66.4 | 63–70 | 76.7 | 74–80 |
Snus use, age groups | ||||
16–24 years | 61.0 | 55–67 | 71.6 | 66–77 |
25–34 years | 69.4 | 65–73 | 79.2 | 75–83 |
35–44 years | 65.0 | 52–77 | 78.3 | 66–88 |
Snus use, groups of parity | ||||
No previous child | 71.9 | 68–76 | 81.3 | 78–85 |
One previous child | 58.8 | 52–65 | 71.2 | 65–77 |
Two or more previous children | 53.5 | 42–64 | 64.0 | 53–74 |
Snus use, educational groups | ||||
Primary/lower secondary | 40.0 | 28–53 | 58.3 | 45–71 |
Upper secondary | 60.9 | 56–66 | 69.7 | 65–74 |
Higher education | 79.9 | 75–84 | 89.8 | 86–93 |
Smoking, all 16–44 years (N = 1259 before pregnancy) | 52.6 | 50–55 | 60.5 | 58–63 |
Smoking, age groups | ||||
16–24 years | 50.0 | 44–56 | 59.9 | 54–66 |
25–34 years | 55.0 | 51–59 | 62.3 | 59–66 |
35–44 years | 46.9 | 40–54 | 54.6 | 48–62 |
Smoking, groups of parity | ||||
No previous child | 60.2 | 56–64 | 67.7 | 64–72 |
One previous child | 50.4 | 45–66 | 58.4 | 53–63 |
Two or more previous children | 40.4 | 35–46 | 48.9 | 43–55 |
Smoking, educational groups | ||||
Primary/lower secondary | 33.7 | 27–41 | 42.2 | 35–50 |
Upper secondary | 51.2 | 47–55 | 58.5 | 55–62 |
Higher education | 72.7 | 67–78 | 78.5 | 73–83 |
Dual use, all 16–44 years b (N = 142 before pregnancy) | 76.8 | 69–83 | 90.8 | 85–95 |