1997 (n = 3224)a | 2003 (n = 5411) a | 2011 (n = 6256) a | P value 11 st vs 2 nd period | P value 2 2 nd vs 3 rd period | |
---|---|---|---|---|---|
Age | |||||
14–19 | 1.9 | 3.0 | 5.6 | 0.20 | <0.01 |
20–25 | 2.9 | 1.7 | 4.4 | <0.05 | <0.01 |
26–29 | 3.5 | 1.7 | 4.7 | <0.05 | <0.01 |
30+ | 1.6 | 2.1 | 4.6 | 0.41 | <0.01 |
P value 3 | 0.07 | 0.09 | 0.46 | ||
Education | |||||
No education | 1.4 | 0.8 | 2.2 | 0.10 | <0.01 |
Primary | 3.1 | 2.3 | 4.2 | 0.12 | <0.01 |
Secondary + | 5.1 | 8.3 | 11.8 | 0.26 | 0.09 |
P value 3 | <0.01 | <0.01 | <0.01 | ||
Parity | |||||
1 | 3.6 | 3.8 | 7.8 | 0.78 | <0.01 |
2–3 | 2.2 | 2.0 | 4.2 | 0.76 | <0.01 |
4+ | 2.1 | 1.2 | 3.6 | <0.05 | <0.01 |
P value 3 | 0.09 | <0.01 | <0.01 | ||
Wealth quintile | |||||
Poorest | -- | 0.2 | 1.7 | -- | <0.01 |
Poor | -- | 0.3 | 2.3 | -- | <0.01 |
Middle | -- | 0.7 | 2.7 | -- | <0.01 |
Richer | -- | 2.1 | 4.1 | -- | <0.01 |
Richest | -- | 7.2 | 12.3 | -- | <0.01 |
P value 3 | -- | <0.01 | <0.01 |