Risk of first surgical intervention for developmental dysplasia of the hip by age 3 years, Scotland, children born 1997/1998–2010/2011, by sex, deprivation quintile and year of birth
| Live births | Number of children | Risk per 1000 live births (95% CI) | Relative risk (95% CI) | |
| Male | 398 036 | 133 | 0.34 (0.28 to 0.40) | 1.00 (ref) |
| Female | 379 339 | 785 | 2.07 (1.93 to 2.22) | 6.20 (5.16 to 7.46) |
| Deprivation | ||||
| 1 (most deprived) | 193 500 | 183 | 0.95 (0.82 to 1.09) | 1.00 (ref) |
| 2 | 157 246 | 193 | 1.23 (1.07 to 1.41) | 1.30 (1.06 to 1.59) |
| 3 | 144 944 | 193 | 1.33 (1.16 to 1.53) | 1.41 (1.15 to 1.72) |
| 4 | 144 096 | 188 | 1.31 (1.13 to 1.51) | 1.38 (1.13 to 1.69) |
| 5 (least deprived) | 137 589 | 161 | 1.17 (1.00 to 1.36) | 1.24 (1.00 to 1.53) |
| Year | ||||
| 1997/1998 | 58 395 | 76 | 1.31 (1.04 to 1.61) | 1.00 (ref) |
| 1998/1999 | 56 728 | 66 | 1.17 (0.91 to 1.47) | 0.89 (0.64 to 1.24) |
| 1999/2000 | 54 636 | 74 | 1.36 (1.07 to 1.69) | 1.04 (0.76 to 1.43) |
| 2000/2001 | 52 659 | 60 | 1.15 (0.88 to 1.47) | 0.88 (0.62 to 1.23) |
| 2001/2002 | 51 341 | 70 | 1.37 (1.07 to 1.70) | 1.05 (0.76 to 1.45) |
| 2002/2003 | 51 236 | 53 | 1.05 (0.79 to 1.34) | 0.80 (0.56 to 1.13) |
| 2003/2004 | 52 939 | 59 | 1.13 (0.86 to 1.42) | 0.86 (0.61 to 1.20) |
| 2004/2005 | 53 945 | 69 | 1.29 (1.00 to 1.60) | 0.98 (0.71 to 1.36) |
| 2005/2006 | 54 178 | 72 | 1.34 (1.04 to 1.66) | 1.02 (0.74 to 1.41) |
| 2006/2007 | 56 291 | 67 | 1.20 (0.94 to 1.50) | 0.91 (0.66 to 1.27) |
| 2007/2008 | 58 476 | 77 | 1.32 (1.05 to 1.63) | 1.01 (0.74 to 1.39) |
| 2008/2009 | 59 211 | 66 | 1.12 (0.87 to 1.41) | 0.86 (0.62 to 1.19) |
| 2009/2010 | 58 957 | 59 | 1.01 (0.77 to 1.28) | 0.77 (0.55 to 1.08) |
| 2010/2011 | 58 383 | 50 | 0.87 (0.65 to 1.12) | 0.66 (0.46 to 0.94) |