More than 200 people a minute sought emergency treatment at casualty wards last year, according to a government survey. But 75 per cent were only complaining of a cold or suffering from acne, figures released at yesterday's Legco session showed. The period between 9pm and 10pm was the busiest, during which doctors treated 12,094 patients, or 201 a minute. And the casualty ward at the United Christian Hospital was the busiest, receiving 262,128 patients in 1998-99, or 718 a day. Kwong Wah Hospital was the second-busiest, with 242,060 patients, followed by Queen Elizabeth Hospital with 215,174. But legislators heard there was little the Government could do, except to further promote the services of evening clinics. The average cost of treating a patient at emergency wards was $621, compared with $218 for treatment at outpatient clinics. Secretary for Health and Welfare Katherine Fok Lo Shiu-ching, responding to legislator Dr Leong Che-hung's proposal to impose service fees on non-urgent cases, said the issue was too controversial.