Kunnamo I, Kallio P, Pelkonen P
Arthritis Rheum. 1986 Oct;29(10):1232-8. doi: 10.1002/art.1780291008.
The incidence of various types of arthritis in children was estimated by a prospective 1-year study in the greater Helsinki area (population under 16 years of age: 148,362). Patients were sought from primary care physicians, and 71% of the patients studied were seen within 1 week of the onset of symptoms. All patients received followup care for at least 3 months; patients whose symptoms were prolonged received followup care for a minimum of 2 years. The incidence per 100,000 children under 16 years of age was as follows: 108.5 for all cases of arthritis, 6.7 for septic arthritis, 5.4 for enteropathic arthritis, 51.9 for transient synovitis of the hip, 18.9 for prolonged arthritis (duration greater than 3 months), and 25.8 for acute transient arthritis. The incidence of juvenile rheumatoid arthritis was 19.6. Oligoarticular disease was prevalent (76%) among the juvenile rheumatoid arthritis patients.
通过在大赫尔辛基地区进行的一项为期1年的前瞻性研究（16岁以下人口：148,362），估算了儿童各类关节炎的发病率。从基层医疗医生处寻找患者，71%的研究对象在症状出现后1周内就诊。所有患者至少接受3个月的随访；症状持续时间较长的患者接受至少2年的随访。每10万名16岁以下儿童的发病率如下：所有关节炎病例为108.5，化脓性关节炎为6.7，肠病性关节炎为5.4，髋关节一过性滑膜炎为51.9，持续性关节炎（病程超过3个月）为18.9，急性一过性关节炎为25.8。青少年类风湿性关节炎的发病率为19.6。少关节型疾病在青少年类风湿性关节炎患者中最为常见（76%）。
