Time period | 2000–2001 | 2002–2003 | 2004–2005 | 2006–2007 | 2008–2009 | 2010–2011 | 2000–2011 |
---|---|---|---|---|---|---|---|
OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
Boys | |||||||
Model 1 | |||||||
Mild | 1.00 | 0.90 (0.86-0.95) | 0.99 (0.94-1.03) | 1.05 (1.01-1.10) | 1.05 (1.01-1.10) | 0.92 (0.88-0.96) | 1.00 (1.00-1.01) |
Moderate | 1.00 | 0.88 (0.84-0.93) | 0.96 (0.91-1.01) | 1.02 (0.97-1.07) | 1.03 (0.98-1.08) | 0.87 (0.83-0.92) | 1.00 (0.99-1.01) |
Severe | 1.00 | 0.95 (0.87-1.04) | 1.00 (0.92-1.09) | 1.07 (0.98-1.16) | 1.08 (0.99-1.18) | 1.04 (0.96-1.14) | 1.02 (1.01-1.03) |
Model 2 | |||||||
Mild | 1.00 | 0.91 (0.87-0.96) | 1.00 (0.95-1.04) | 1.06 (1.02-1.11) | 1.06 (1.02-1.11) | 0.93 (0.88-0.97) | 1.01 (1.00-1.01) |
Moderate | 1.00 | 0.89 (0.85-0.94) | 0.98 (0.93-1.03) | 1.04 (0.99-1.09) | 1.05 (1.00-1.10) | 0.89 (0.84-0.94) | 1.00 (0.99-1.01) |
Severe | 1.00 | 0.97 (0.89-1.06) | 1.04 (0.95-1.13) | 1.10 (1.01-1.20) | 1.11 (1.02-1.21) | 1.08 (0.99-1.18) | 1.03 (1.01-1.04) |
N | 47586 | 50774 | 53057 | 54315 | 54132 | 51116 | 310980 |
Girls | |||||||
Model 1 | |||||||
Mild | 1.00 | 0.89 (0.86-0.92) | 0.93 (0.89-0.96) | 0.94 (0.91-0.98) | 0.96 (0.92-0.99) | 0.93 (0.89-0.96) | 1.00 (0.99-1.00) |
Moderate | 1.00 | 0.86 (0.83-0.90) | 0.95 (0.91-0.98) | 0.98 (0.95-1.02) | 0.98 (0.95-1.02) | 0.98 (0.95-1.02) | 1.01 (1.00-1.02) |
Severe | 1.00 | 0.84 (0.79-0.90) | 1.04 (0.97-1.10) | 1.02 (0.96-1.08) | 1.08 (1.01-1.15) | 1.16 (1.09-1.24) | 1.04 (1.03-1.06) |
Model 2 | |||||||
Mild | 1.00 | 0.90 (0.86-0.93) | 0.94 (0.90-0.97) | 0.95 (0.92-0.99) | 0.97 (0.93-1.003) | 0.94 (0.90-0.97) | 1.00 (0.99-1.00) |
Moderate | 1.00 | 0.88 (0.84-0.91) | 0.97 (0.93-1.01) | 1.01 (0.97-1.05) | 1.007 (0.97-1.05) | 1.009 (0.97-1.05) | 1.02 (1.01-1.02) |
Severe | 1.00 | 0.86 (0.81-0.92) | 1.07 (1.01-1.14) | 1.06 (0.99-1.12) | 1.12 (1.05-1.19) | 1.21 (1.14-1.29) | 1.05 (1.04-1.06) |
N | 47049 | 49236 | 51713 | 54005 | 54035 | 51066 | 307104 |