Which of the following method of contraception has maximum chances of failure?

Options

A. Rhythm/Periodic abstinence
B. Vasectomy
C. Condoms
D. IUDs

Explanation

To determine which method of contraception has the maximum chances of failure, we can analyze the different types of contraceptive methods and their failure rates. Here’s a step-by-step breakdown:

### Step 1: Identify the Types of Contraceptive Methods
Contraceptive methods can be categorized into several types:
- **Surgical Methods** (e.g., vasectomy, tubectomy)
- **Barrier Methods** (e.g., condoms)
- **Hormonal Methods** (e.g., oral contraceptive pills)
- **Mechanical Methods** (e.g., IUDs)
- **Natural Methods** (e.g., periodic abstinence, lactational amenorrhea)

### Step 2: Analyze Failure Rates of Each Method
1. **Surgical Methods**:
- Vasectomy and tubectomy have a failure rate of 0%. Once performed, they provide permanent contraception.

2. **Barrier Methods**:
- Condoms (both male and female) have a very low failure rate, close to 0%.

3. **Hormonal Methods**:
- Oral contraceptive pills also have a negligible failure rate as they prevent ovulation effectively.

4. **Mechanical Methods**:
- IUDs (like copper T) have a failure rate that is almost negligible.

5. **Natural Methods**:
- Periodic Abstinence: This method involves avoiding intercourse during the ovulation period (approximately days 10 to 17 of the menstrual cycle). The failure rate for this method is about 2-3%, which is higher compared to the other methods.

### Step 3: Compare the Failure Rates
From the analysis:
- Surgical methods, barrier methods, hormonal methods, and mechanical methods have very low to zero failure rates.
- Natural methods, specifically periodic abstinence, have a failure rate of 2-3%, making it the least reliable method among those listed.

### Conclusion
The method of contraception with the maximum chances of failure is **Periodic Abstinence** (option 1).

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