Table 4.
Category of Read codes used to record the total number of consultations for knee problems when stratified by age group, sex and socio-economic deprivation, n (%)
| Symptom | Diagnosis | Row total, n (%) | |||
|---|---|---|---|---|---|
| Trauma | Non-trauma | ||||
| Age* | 3 to 7 years, n (%) | 39 (79.6) | 10 (20.4) | 49 (8.9) | |
| 8 (16.3) | 2 (4.1) | ||||
| 8 to 11 years, n (%) | 57 (75.0) | 19 (25.0) | 76 (13.8) | ||
| 17 (22.4) | 2 (2.6) | ||||
| 12 to 15 years, n (%) | 152 (69.7) | 66 (30.3) | 218 (39.6) | ||
| 58 (26.6) | 8 (3.7) | ||||
| 16 to 19 years, n (%) | 106 (51.2) | 101 (48.8) | 207 (37.6) | ||
| 92 (44.4) | 9 (4.3) | ||||
| Column total, n (%) | 354 (64.4) | 196 (35.6) | 550 (100) | ||
| 175 (31.8) | 21 (3.8) | ||||
| Sex† | |||||
| Boy, n (%) | 191 (59.9) | 128 (40.1) | 319 (58) | ||
| 119 (37.3) | 9 (2.8) | ||||
| Girl, n (%) | 163 (70.6) | 68 (29.4) | 231 (42) | ||
| 56 (24.2) | 12 (5.2) | ||||
| Column total, n (%) | 354 (64.4) | 196 (35.6) | 550 (100) | ||
| 175 (31.8) | 21 (3.8) | ||||
| Area of socio-economic deprivation ‡ | Low, n (%) | 106 (77.9) | 30 (22.1) | 136 (24.7) | |
| 26 (19.1) | 4 (2.9) | ||||
| Medium, n (%) | 180 (65.0) | 97 (35.0) | 277 (50.4) | ||
| 87 (31.4) | 10 (3.6) | ||||
| High, n (%) | 49 (44.1) | 62 (55.9) | 111 (20.2) | ||
| 55 (49.5) | 7 (6.3) | ||||
| Missing, n (%) | 19 (73.1) | 7 (26.9) | 26 (4.7) | ||
| 7 (26.9) | 0 (0.0) | ||||
| Column total, n (%) | 335 (63.9) | 215 (39.9) | 550 (100) | ||
| 168 (32.1) | 21 (4.0) | ||||
Total number of consultations for knee problem in 2010, n = 550
Bolded numbers = cells with significant adjusted standardized residuals greater than +1.96 (observed frequency is more than the expected frequency)
NB: Chi Square tests were applied to test for differences between the stratified groups by symptom or diagnosis (no analysis was carried out on the sub-category of trauma / non-trauma as cell numbers were considered too low, n < 5). Data for diagnosis: non-trauma are presented for reader interest
* X 2 = 27.05, df = 3, p < 0.001
† X 2 = 6.67, df = 1, p = 0.01
‡ X 2 = 30.56, df = 2, p < 0.001