Table 1.
Sociodemographic and clinical characteristics of the study samples
| Full sample (N = 1225) | Dimension scores sample (N = 1198) | Item scores sample (N = 842) | Estimation sample (N = 674) | Validation sample (N = 168) | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Age categories, n (%) | ||||||||||
| 0–12 months | 9 | 0.73% | – | – | – | – | – | – | – | |
| 13–24 months | 18 | 1.47% | – | – | – | – | – | – | – | |
| 2–4 years | 333 | 27.18% | 333 | 27.80% | – | – | – | – | – | |
| 5–7 years | 252 | 20.57% | 252 | 21.04% | 245 | 29.10% | 204 | 30.27% | 41 | 24.40% |
| 8–12 years | 413 | 33.71% | 413 | 34.47% | 404 | 47.98% | 320 | 47.48% | 84 | 50.00% |
| 13–17 years | 200 | 16.33% | 200 | 16.69% | 193 | 22.92% | 150 | 22.26% | 43 | 25.60% |
| Sex, n (%) | ||||||||||
| Female | 578 | 47.18% | 569 | 47.50% | 402 | 47.74% | 320 | 47.48% | 82 | 48.81% |
| Male | 647 | 52.82% | 629 | 52.50% | 440 | 52.26% | 354 | 52.52% | 86 | 51.19% |
| Tracer condition, n (%) | ||||||||||
| Asthma only | 323 | 26.37% | 322 | 26.88% | 275 | 32.66% | 217 | 32.20% | 58 | 34.52% |
| Constipation only | 194 | 15.84% | 188 | 15.69% | 95 | 11.28% | 78 | 11.57% | 17 | 10.12% |
| Eczema only | 433 | 35.35% | 415 | 34.64% | 249 | 29.57% | 207 | 30.71% | 42 | 25% |
| Multimorbidity | 275 | 22.45% | 273 | 22.79% | 223 | 26.48% | 172 | 25.52% | 51 | 30.36% |
| IMD (2019), n (%) | ||||||||||
| 1—Most deprived | 23 | 1.88% | 22 | 1.84% | 13 | 1.54% | 10 | 1.48% | 3 | 1.79% |
| 2 | 282 | 23.02% | 276 | 23.04% | 198 | 23.52% | 162 | 24.04% | 36 | 21.43% |
| 3 | 361 | 29.47% | 352 | 29.38% | 244 | 28.98% | 198 | 29.38% | 46 | 27.38% |
| 4 | 204 | 16.65% | 200 | 16.69% | 151 | 17.93% | 122 | 18.10% | 29 | 17.26% |
| 5 | 131 | 10.69% | 127 | 10.60% | 87 | 10.33% | 66 | 9.79% | 21 | 12.50% |
| 6 | 134 | 10.94% | 132 | 11.02% | 84 | 9.98% | 70 | 10.39% | 14 | 8.33% |
| 7 | 45 | 3.67% | 44 | 3.67% | 33 | 3.92% | 25 | 3.71% | 8 | 4.76% |
| 8 | 35 | 2.86% | 35 | 2.92% | 27 | 3.21% | 18 | 2.67% | 9 | 5.36% |
| 9 | 10 | 0.82% | 10 | 0.83% | 5 | 0.59% | 3 | 0.45% | 2 | 1.19% |
| 10—Least deprived | 0 | 0.00% | 0 | 0.00% | 0 | 0.00% | 0 | 0 | 0 | 0.00% |
| IDACI (2019), n (%) | ||||||||||
| 1—Most deprived | 189 | 15.43% | 184 | 15.36% | 136 | 16.15% | 111 | 16.47% | 25 | 14.88% |
| 2 | 380 | 31.02% | 373 | 31.14% | 273 | 32.42% | 213 | 31.60% | 60 | 35.71% |
| 3 | 240 | 19.59% | 234 | 19.53% | 162 | 19.24% | 132 | 19.58% | 30 | 17.86% |
| 4 | 129 | 10.53% | 125 | 10.43% | 84 | 9.98% | 72 | 10.68% | 12 | 7.14% |
| 5 | 84 | 6.86% | 81 | 6.76% | 47 | 5.58% | 35 | 5.19% | 12 | 7.14% |
| 6 | 70 | 5.71% | 69 | 5.76% | 47 | 5.58% | 41 | 6.08% | 6 | 3.57% |
| 7 | 69 | 5.63% | 68 | 5.68% | 49 | 5.82% | 40 | 5.93% | 9 | 5.36% |
| 8 | 40 | 3.27% | 40 | 3.34% | 27 | 3.21% | 19 | 2.82% | 8 | 4.76% |
| 9 | 16 | 1.31% | 16 | 1.34% | 10 | 1.19% | 7 | 1.04% | 3 | 1.79% |
| 10—Least deprived | 8 | 0.65% | 8 | 0.67% | 7 | 0.83% | 4 | 0.59% | 3 | 1.79% |
| Ethnicity, n (%) | ||||||||||
| White | 445 | 36.33% | 437 | 36.48% | 287 | 34.09% | 228 | 33.83% | 59 | 35.12% |
| Black | 381 | 31.10% | 372 | 31.05% | 288 | 34.20% | 235 | 34.87% | 53 | 31.55% |
| Mixed | 218 | 17.80% | 215 | 17.95% | 146 | 17.34% | 108 | 16.02% | 38 | 22.62% |
| Asian | 69 | 5.63% | 65 | 5.43% | 44 | 5.23% | 39 | 5.79% | 5 | 2.98% |
| Other ethnic groups | 48 | 3.92% | 48 | 4.01% | 33 | 3.92% | 30 | 4.45% | 3 | 1.79% |
| Prefer not to say | 41 | 3.35% | 41 | 3.42% | 30 | 3.56% | 23 | 3.41% | 7 | 4.17% |
| Missing | 23 | 1.88% | 20 | 1.67% | 14 | 1.66% | 11 | 1.63% | 3 | 1.79% |
White ethnicity includes White British, White Irish and White Any other White background. Black ethnicity includes Caribbean, African, and Any other Black background. Mixed ethnicity includes White and Black Caribbean, White and Black African, White and Asian, and any other Mixed background. Asian includes Indian, Pakistani, Bangladeshi, and Any other Asian background. Other ethnic groups include Chinese and Any other ethnic group
IMD Index of Multiple Deprivation, IDACI Income Deprivation Affecting Children Index