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A prospective study was carried out during nine-month period (from 1st of December 2001 until the end of August 2002) in Basrah Maternity and Children Teaching Hospital. The aim is to assess the timing, frequency and severity of symptomatic effects of combined oral contraceptive (COC) users specifically to compare 21 days of active pill intervals with 7 days of hormonefree intervals in both current (COC user for ≥12 months) and new users (COC user for 3 months). Current users had pattern of symptoms that were observed significantly worse during hormone-free interval than during the three active-pill weeks for both 1st and 2nd cycles. 57% and 56% of them experienced mild pelvic pain during free period versus 19% and 16% during active-pills weeks in both cycles respectively (P=0.001), while moderate to severe pelvic pain, the corresponding percentages were 22% and 22% versus 9% and 8% (P=0.042). For Nausea, the percentages were 48% and 46% versus 31% and 30%. For bloating the corresponding percentages were 46% and 46% versus 18% and 16% (P>0.0001) and for breast tenderness the corresponding percentage in free period were 29% and 29% versus 16% and 15% in active pill interval in both cycles respectively (P=0.0004). The reverse was true when other symptoms were assessed like headache and mood changes. Regarding headache the corresponding percentages were 35% and 33% during free period versus 60% and 58% during active pill interval in both cycles respectively, and for mood changes, the percentages were 21% and 19% versus 50% and 47% respectively. Similar patterns for all previous symptoms were observed in new start COC users in both cycle 1 and 2 for pelvic pain, nausea, bloating and breast tenderness. These symptoms increased and became worse during hormone free interval while headache and mood changes became more severe during active hormone period than during hormone free interval. Breakthrough vaginal bleeding occurred more frequently in new start COC in comparison to current users. The percentages were 20% and 16% versus 5% and 3% in both cycles respectively. Menstrual flow decreased significantly in current users in comparison to new start COC (5% and 16%) respectively (Table-4). This study confirmed that most symptoms assessed were significantly worse during the 7 day hormone-free interval than during the 21 day of hormone-containing pills. INTRODUCTION ral contraceptives (OCs), the most common method of reversible birth control, are used by approximately 80% of women in the United States at some time during their reproductive years. The COC contains both oestrogen, usually ethinyloestradiol, and a progestogen. The dose of oestrogen varies from 20-50μg. Most women are now using the so-called low dose pills containing 30-35μg. Despite the continuous reduction in hormone content since OCs introduction almost 40 years ago, side effects continue to affect compliance. The most commonly reported side effects are nausea and vomiting, breakthrough bleeding and spotting, headaches, bloating and breast tenderness. The COCs confer a number of health benefits. Menstrual periods are usually lighter, shorter and more regular during pills use. They also tend to be less painful. Although women are prescribed COC as a treatment for menorrhagia or dysmenorrhoea, the long term success rates of current low dose OCs in managing those common menstrual disorders is not known. There is also a lack of information comparing symptoms in new-start COCs users with long term users during the 21 days of hormone containing pills and the 7 days hormone-free interval. If the problems are a result of the 7 day hormone withdrawal, knowledge of the types and severity of complaints could lead to specific interventions. In this study, we examined prospectively hormonal symptomatology in women currently using and new initiating COC to assess the frequency, timing and severity of complaints during each of the 21 days of active pills compared with 7 days of hormone-free pills. PATIENTS AND METHODS A prospective study was carried out on 360 women of 20931 who attended family planning clinic at Basrah Maternity and Children Hospital (from 1 of December 2001 until the end of August 2002). They requested COC pills for birth control. They were eligible for O MJBU, VOL 23, No. 1, 2005 22 participation if they have recent COCs use for 3 months (162) (considered a new starts) or current users for ≥ 12 months (198). All women used low dose COC pills of 21 days active pills containing 0.03mg of ethinylestradiol (E2), 0.15mg of levonorgestrel and 7 brown tablets, hormone free pills, each containing ferrous fumerate 75 mg. All selected women were apparently healthy and had no past medical or gynaecological problems. Demographic information was registered including age, gravidity, weight, occupation and education level. The socioeconomic status of women was determined based upon education level and occupation. All women were asked to keep daily calendars during their next two full cycles of COCs. Educated women recorded daily hormone-related symptoms like nausea, vomiting, bloating, breast tenderness, vaginal bleeding, headache and mood changes. Types and amounts of analgesics were, also, recorded. Illiterate women husbands were asked to record the daily hormone related symptoms. For pelvic pain, we considered pain as mild if there is no need for analgesic drugs, and moderate to severe whenever there was a need for analgesic drugs. Menstrual flow was assessed, comparing the 2 cycle of new starts with the 1 reported cycle of current users. Menstrual flow was graded on a scale of 0-4 (0=no bleeding, I= spotting that did not require protection, 2= light flow that soaked a pad less frequently than every 8 hours, 3=moderate flow that soaked a pad every 3-8 hours, 4= heavy flow that soaked a pad more frequently than every 3 hours). Women checked boxes on the calendar for the purpose of this study if they had any hormone related symptoms. Demographic and baseline characteristics were compared with the use of analysis of variance for continuous variables and X test for categoric variables as a test of significance. It is regarded significant if the Pvalue < 0.05. RESULTS During the period of the study, 360 women were returned their detailed calendars for analysis. The demographic features of both groups (198 women were current users and 162 were new start users) were shown in (Table-1). There was no significant difference in the two groups, as the women education, age and parity were approximately similar. Also, it was found that more women had primary school education (38% versus 31%) and were housewives (79% versus 78%) in both groups respectively. The difference was statistically not significant. The symptomatic side effects among current users in cycle 1 and 2 were shown in (Table-2) during three weeks active hormone interval and the free week pills interval. Data of pelvic pain (mild and moderate to severe pain) were assessed and were well matched in both periods. It was found that the hormone-free interval had significantly higher prevalence of pelvic pain in both cycles. The weekly average of mild pelvic pain during the three active hormone weeks in cycle 1 and 2 were (19% and 16%) versus (57% and 56%) during the hormone-free week respectively (P=0.0001). The prevalence of severe pelvic pain during the three-active hormone weeks in cycle 1 and 2 were (9% and 8%) versus (22% and 22%) during the hormone-free interval respectively. The difference was statistically significant (P=0.042). Other symptoms, such as nausea, vomiting, bloating, breast tenderness, mood changes and breakthrough bleeding were also analyzed. The prevalence of nausea, vomiting, bloating and breast tenderness, as shown in (Table-2) , were higher among women during the hormone-free intervals in both cycles in comparison to active 3 hormone-weeks. For nausea, the corresponding percentages were (48% and 46%) versus (31% and 30%) for the free and active periods respectively (P=0.016). The corresponding percentages for vomiting in both periods were (15% and 14%) versus (11% and 10%) in both cycles respectively (P=0.244). Also the percentage of bloating were (48% and 46%) versus (18% and 16%) respectively, (P<0.0001), and for breast tenderness (29% and 29%) versus (16% and 15%) (P=0.0004). The number of women with headache and mood changes increased during the three week active hormone intervals. For headache in cycle 1 and 2 , the corresponding percentage were (60% and 58%) versus (35% and 33%) respectively (P=0.001) (Table-2). The percentages for mood changes were (50% and 47%) versus (21% and 19%) respectively, (P=0.0002) (Table-2). Same data were analyzed in new start COC pills in cycle 1&2 in hormone free interval and active 3 week hormone intervals. The hormone free MJBU, VOL 23, No. 1, 2005 23 interval in each cycle had significantly higher symptomatic side effects prevalence in comparison to 3 week hormone intervals in regard to pelvic pain (mild and moderate to severe), nausea, vomiting, bloating and breast tenderness as shown in (Table-3). The average prevalence of mild pelvic pain in cycle 1 during the active hormone week was 32% versus 72% during hormone free period and during cycle 2, the corresponding percentages were 27% versus 63% in free period respectively (P-value=0.0004). For nausea, vomiting, bloating and breast tenderness the corresponding percentage in cycle 1 during active 3 week intervals were (53%, 16%, 20% and 22%) and in cycle 2 (53%, 15%, 18% and 20%) respectively in comparison to (65%, 20%, 60% and 49%) in cycle 1 and (62%, 19%, 58% and 47%) in cycle 2 during free hormone interval. The differences were statistically significant except for vomiting and as shown in (Table-3). Headache and mood changes were

SYMPTOMATIC SIDE EFFECTS OF COMBINED ORAL CONTRACEPTIVE PILLS