Table 8.
Use of health care in a trial of insulating houses. Values are number of people (total number of people with available data) unless stated otherwise
| Outcome measure | Before intervention | After intervention | Odds ratio (95% CI) | |||||
|---|---|---|---|---|---|---|---|---|
| Intervention group | Control group | Intervention group | Control group | Unadjusted | Adjusted | |||
| Primary care | ||||||||
| Self reported visit to general practitioner | 813 (1448) | 769 (1396) | 664 (1448) | 715 (1396) | 0.81 (0.70 to 0.94) P=0.0043 | 0.73 (0.62 to 0.87) P=0.0002† | ||
| General practitioner reported visit | 814 (1390) | 765 (1346) | 769 (1390) | 743 (1346) | 1.01 (0.86 to 1.17) P=0.9484 | 0.95 (0.81 to 1.13) P=0.58† | ||
| Secondary care* | ||||||||
| Admitted to hospital; main code a respiratory condition | 7 (1379) | 10 (1340) | 8 (1386) | 14 (1345) | 0.552 (0.23 to 1.32) P=0.18 | 0.53 (0.22 to 1.29) P=0.16 χ2/df=0.89‡ | ||
| Admitted to hospital; main code a control condition | 48 (1379) | 56 (1340) | 43 (1386) | 48 (1345) | 0.865 (0.569 to 1.312; P=0.50) | 0.90 (0.59 to 1.37) P=0.61§ | ||
Outcomes were measured on people with attendance records for both years in primary care and by using a unique identifier in the second year in secondary care.
All adjusted odds ratios were adjusted for age, sex, and ethnic origin.
*Twelve babies were born in the year between the first and second winter; 7 in the intervention group and 5 in the control group.
†Also adjusted for baseline value and region.
‡Also adjusted for region.