A socio-medical study was performed to assess contraceptive effectiveness in the subjects 201 first users which were observed from May 1984 to August 1985. 91 clients who inserted Lippes loop were included to Non-active group and the other 110 clients, 52 users wearing TCu220c, 30 using MLCU250 and 28 with Gravigard were included to Active group. In the view point of continuous probability, dis-continuous probability and side effects which were occurred after they inserted IUD, it was compared with the effectiveness of Non-active group and that of Active group.
The results are as follows;
1. General characteristics of both Non-active group and Active group such as age distribution, educational level, pregnancy frequency, living child, living son and induced abortion respectively were classfied. But there was no significant difference between these two groups (P>0.05)
2. According to the observation as of the and of August 1985 the number of continuous users of Active group appeared by far more than Non-active group with significant difference. As a result, there was a great of correlation between the types of IUD and continuous users of IUD (P<0.01, Odds Ratio=2.7).
3. The continuous Probability of the two groups was much greater in Active group than in Non-active group when was observed at the end of 3, 6, 9, 12 month (P<0.01).
4. The reasons for dis-continuous users were removal either by medical or non-medical reason, unexpected pregnancy and expulsion. But the greatest of the reason for discontinuous users showed the removal owing to medical reason not only Non-active group but Active group.
5. The medical reasons were bleeding, PID, pain, leucorrhea, tail in uterus and perforation. Bleeding was the first rank as 38.8% in Non-active group and 36.6% in Active group. But the next was PID (27.3%) in Non-active group and pain (27.3%) in Active group.
6. The users experienced side effects were 67% in Non-active group and 35% in Active group respectively (P<0.05, Odds Ratio=3.70).
7. Analysing the side effect, spotting, bleeding, low abdomen, leucorrhea, PID, perforation and tial in uterus were observed. PID was the first in Non-active group. (37.6%) and bleeding was the first in Active group (20.3%).
Observing the time of incidence of side effect, 57.3% (53 cases) of total side effects in Non-active group and 61.1% (39cases)in Active group occurred in the period of between one month and three months. Though incidence rate of side effect of Active group was higher than that of Non-active group during this period (3 months), but after this period Non-active group was higher than Active group.
There was correlation occurrence of side effect with risk pregnancy group in Non-active group (P<0.05, Odds Ratio=10.3). And there was correlation occurrence of side effect with risk age group (P<0.05, Odds Ratio=2.07).
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