Maggwa B N, Mati J K, Mbugua S, Hunter D J
Department of Obstetrics and Gynecology, University of Nairobi, Kenya.
Int J Epidemiol. 1993 Aug;22(4):692-7. doi: 10.1093/ije/22.4.692.
To determine the validity of self-reported contraceptive histories obtained from rural Kenyan women, we interviewed 122 women participants in a long-term study during which their contraceptive use had been recorded regularly at clinics. Interview information was compared with each woman's clinic record. In all 71 women (58%) reported ever use of oral contraceptives, while 76 (62%) of the clinic records documented ever use. The agreement between the records and interview was reasonable (Kappa = 0.54, P < 0.001). The sensitivity of self-report of use compared to clinic records was 79%, specificity was 76%, positive and negative predictive values were 85% and 69% respectively. Ever use of injectable contraceptives (Depo-Provera) was reported by 78 (63%) women while the records showed use by 80 (65%) women (Kappa = 0.87, P < 0.001). The sensitivity, specificity, positive and negative predictive values were 94%, 93%, 96%, and 89% respectively. For the intrauterine contraceptive device, ever use was reported by 18 (14.8%) women while the records showed 19 (15.6%) (Kappa = 0.90, P < 0.001). The associated sensitivity, specificity, positive and negative predictive values were 90%, 99%, 94% and 98% respectively. The validity of reported duration of use of each method showed a similar pattern to that of the history of ever use. The Spearman's rank correlations for the duration of use calculated from interview compared with the clinic records were for oral contraceptives r = 0.68 (P < 0.001), injectables r = 0.81 (P < 0.001) and intrauterine devices r = 0.82 (P < 0.001).(ABSTRACT TRUNCATED AT 250 WORDS)
为了确定从肯尼亚农村妇女那里获取的自我报告避孕史的有效性，我们在一项长期研究中采访了122名女性参与者，在此期间她们在诊所的避孕使用情况有定期记录。将访谈信息与每位女性的诊所记录进行比较。在所有受访者中，71名女性（58%）报告曾使用口服避孕药，而诊所记录显示76名女性（62%）曾使用。记录与访谈之间的一致性较为合理（卡帕值 = 0.54，P < 0.001）。与诊所记录相比，自我报告使用情况的敏感度为79%，特异度为76%，阳性预测值和阴性预测值分别为85%和69%。78名女性（63%）报告曾使用注射用避孕药（甲羟孕酮避孕针），而记录显示80名女性（65%）曾使用（卡帕值 = 0.87，P < 0.001）。其敏感度、特异度、阳性预测值和阴性预测值分别为94%、93%、96%和89%。对于宫内节育器，18名女性（14.8%）报告曾使用，而记录显示为19名女性（15.6%）（卡帕值 = 0.90，P < 0.001）。相关的敏感度、特异度、阳性预测值和阴性预测值分别为90%、99%、94%和98%。每种方法报告的使用时长的有效性呈现出与曾使用史相似的模式。根据访谈计算得出的使用时长与诊所记录的斯皮尔曼等级相关性，对于口服避孕药r = 0.68（P < 0.001），对于注射用避孕药r = 0.81（P < 0.001），对于宫内节育器r = 0.82（P < 0.001）。（摘要截选至250词）
