All chronic day-patients (n = 422), defined as patients aged 18-64 years attending a day facility of a psychiatric hospital or general hospital psychiatric unit continuously for more than a year, were identified in hospitals and units serving 56% of the Scottish population. The number of day patients was 14.8 per 100,000 of the general population, but the range between hospitals was very great--0 to 37.7 per 100,000--indicating the patchy development of such care. A typical day patient was a rather chronic middle-aged male schizophrenic, who lived on his own or with ageing parents. Most patients' accommodation was satisfactory, but the occupational activity of more than a third was inappropriate; 18% could have attended a local authority sheltered workshop if one had been available.