Helm P, Münster K R, Schmidt L
Amtssygehuset i Gentofte, gynaekologisk obstetrisk afdeling, Hillerød Sygehus.
Ugeskr Laeger. 1998 Dec 14;160(51):7430-3.
It was the aim to determine recalled ages at menarche and prevalence of primary amenorrhea in a random sample of 3743 women, aged 15-44 years, in a Danish county. It was a further object to examine agreement between results obtained by the recall and the status quo method. Response rate was 78%. The prevalence of primary amenorrhea (menarche after the 18th birthday) was 0.48%. In the calculations the reported menarcheal ages were treated as age-at-nearest-birthday, i.e. the usual 0.5 year mid-point correction was omitted. The resulting mean ages showed close agreement with Danish menarcheal ages, obtained by the status quo method, covering the same period of time. On the other hand, previously published recall data for this period, including the 0.5 year correction, were almost consistently 0.5 year higher. It is argued that the 0.5 year midpoint correction should be omitted in recalled whole-year data.
目的是确定丹麦一个县3743名年龄在15至44岁的女性随机样本中回忆起的初潮年龄以及原发性闭经的患病率。另一个目的是检验回忆法和现状法所得结果之间的一致性。应答率为78%。原发性闭经（18岁以后初潮）的患病率为0.48%。在计算中，所报告的初潮年龄被当作最接近生日的年龄，即省略了通常的0.5年中点校正。所得的平均年龄与同期通过现状法获得的丹麦初潮年龄显示出密切的一致性。另一方面，此前发表的该时期回忆数据，包括0.5年校正，几乎始终高出0.5年。有人认为，在回忆全年数据时应省略0.5年中点校正。
