Table 3.
Category of Read codes used to record knee problems for patient presentations 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 (%) | 28 (77.8) | 8 (22.2) | 36 (11.0) | |
| 8 (22.2) | 0 (0) | ||||
| 8 to 11 years, n (%) | 35 (71.4) | 14 (28.6) | 49 (15.0) | ||
| 12 (24.5) | 2 (4.1) | ||||
| 12 to 15 years, n (%) | 91 (65.5) | 48 (34.5) | 139 (42.5) | ||
| 42 (30.2) | 6 (4.3) | ||||
| 16 to 19 years, n (%) | 64 (62.1) | 39 (37.9) | 103 (31.5) | ||
| 35 (34.0) | 4 (3.9) | ||||
| Column total, n (%) | 218 (66.7) | 109 (33.3) | 327 (100) | ||
| 97 (29.7) | 12 (3.7) | ||||
| Sex† | |||||
| Boy, n (%) | 125 (64.8) | 68 (35.2) | 193 (59.0) | ||
| 61 (31.6) | 7 (3.6) | ||||
| Girl, n (%) | 93 (69.4) | 41 (30.6) | 134 (41.0) | ||
| 36 (26.9) | 5 (3.7) | ||||
| Column total, n (%) | 218 (66.7) | 109 (33.3) | 327 (100) | ||
| 97 (29.7) | 12 (3.7) | ||||
| Area of socio-economic deprivation‡ | Low, n (%) | 59 (73.8) | 21 (26.3) | 80 (25.5) | |
| 18 (22.5) | 3 (3.8) | ||||
| Medium, n (%) | 125 (69.1) | 56 (30.9) | 181 (57.6) | ||
| 50 (27.6) | 6 (3.3) | ||||
| High, n (%) | 25 (47.2) | 28 (52.8) | 53 (16.9) | ||
| 25 (47.2) | 3 (5.7) | ||||
| Missing, n (%) | 9 (69.2) | 4 (30.8) | 13 (4.0) | ||
| 4 (30.8) | 0 | ||||
| Column total, n (%) | 209 (66.6) | 105 (33.4) | 314 (100) | ||
| 93 (29.6) | 12 (3.8) | ||||
Patient presentations: Number of patients who consulted on at least one occasion in 2010, n = 327
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 = 3.541, df = 3, p = 0.315
† X 2 = 0.765, df = 1, p = 0.382
‡ X 2 = 11.32, df = 2, p = 0.003