Table 2 Descriptive statistics
From: The long-term health effects of attending a selective school: a natural experiment
| Â | Aberdeen Children of the 1950s (total) | Base sample (total) | Study sample (total) | Study sample (attended non-selective secondary) | Study sample (attended selective secondary) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Â | Cases | Mean | Cases | Mean | Cases | Mean | Cases | Mean | Cases | Mean |
Boy (%) | 12,148 | 52% | 8087 | 52% | 5039 | 49% | 3845 | 49% | 1194 | 49% |
IQ aged 9 | 11,384 | 111 | 7998 | 110 | 4998 | 112 | 3816 | 106 | 1182 | 129 |
Father non-manual labour (%) | 12,148 | 21% | 8087 | 17% | 5039 | 17% | 3845 | 13% | 1194 | 32% |
11+ exam score | 9600 | 498 | 8087 | 495 | 5039 | 502 | 3845 | 476 | 1194 | 584 |
General health (0–3 scale) | 7143 | 2.0 | 4806 | 2.0 | 4734 | 2.0 | 3542 | 1.9 | 1192 | 2.2 |
Mental health (0–15 scale) | 7111 | 8.5 | 4786 | 8.5 | 4716 | 8.5 | 3529 | 8.5 | 1187 | 8.7 |
Life limited by health (%) | 7012 | 17% | 4720 | 17% | 4651 | 17% | 3470 | 18% | 1181 | 13% |
Linked to NHS records (%) | 10,634 | 88% | 7181 | 89% | 4687 | 93% | 3614 | 94% | 1073 | 90% |
Chronic diagnoses 1997–2001 (per 100 people) | 10,634 | 13 | 7181 | 13 | 4687 | 11 | 3614 | 13 | 1073 | 8 |
Chronic diagnoses 2011–2015 (per 100 people) | 10,634 | 39 | 7181 | 41 | 4687 | 40 | 3614 | 44 | 1073 | 26 |
Died before age 60 (%) | 12,148 | 8% | 8087 | 8% | 5039 | 4% | 3845 | 5% | 1194 | 3% |
Attended selective secondary (%) | na | na | na | na | 5039 | 24% | na | na | na | na |