I believe the best way to increase your belief is to become increasingly competent (typically over time) in the area that you desire. Eventually you will get a taste of success that increases your belief (and your confidence!) around what’s possible.

AND, motivates you to keep trying until you master and succeed at the goal you’ve set before you! With each small success you experience, you will experience an increase in your belief AND in your confidence! Welcome to my blog, where stating the obvious, speaking the truth and using common sense seems to either inspire people, or royally piss them off. When we are self confident, we act from a place of knowing who we are and where we are going. Arrogance, while often appearing as confidence is fueled by a selfish reason to appease one’s whims and desires, without care for consequences to others.

When I set my boundaries and do what is best for me, I tend to usually not hurt others in the process, because doing what is best for me involves surrounding myself with those who deserve my time, space and love. It is possible to be all of you and have your boundaries and needs respected within relationships and friendships; provided you choose wisely.

This entry was posted in Break-the-Cycle Series, Human Behavior, Relationships and tagged arrogance, balance, boundaries, Carmen Honacker, confidence, love yourself, loving yourself, self-confidence, selfish, selfishness, setting boundaries, standing up. As noted in earlier modules a key goal in applied biostatistics is to make inferences about unknown population parameters based on sample statistics. Strictly speaking a 95% confidence interval means that if we were to take 100 different samples and compute a 95% confidence interval for each sample, then approximately 95 of the 100 confidence intervals will contain the true mean value (μ).

Suppose we want to generate a 95% confidence interval estimate for an unknown population mean. Using algebra, we can rework this inequality such that the mean (μ) is the middle term, as shown below. In the health-related publications a 95% confidence interval is most often used, but this is an arbitrary value, and other confidence levels can be selected. With smaller samples (n< 30) the Central Limit Theorem does not apply, and another distribution called the t distribution must be used. Suppose we wish to estimate the mean systolic blood pressure, body mass index, total cholesterol level or white blood cell count in a single target population. Descriptive statistics on variables measured in a sample of a n=3,539 participants attending the 7th examination of the offspring in the Framingham Heart Study are shown below. The table below shows data on a subsample of n=10 participants in the 7th examination of the Framingham offspring Study. Suppose we compute a 95% confidence interval for the true systolic blood pressure using data in the subsample. Suppose we wish to estimate the proportion of people with diabetes in a population or the proportion of people with hypertension or obesity.

This formula is appropriate for large samples, defined as at least 5 successes and at least 5 failures in the sample. Specific applications of estimation for a single population with a dichotomous outcome involve estimating prevalence, cumulative incidence, and incidence rates. The table below, from the 5th examination of the Framingham Offspring cohort, shows the number of men and women found with or without cardiovascular disease (CVD). There are many situations where it is of interest to compare two groups with respect to their mean scores on a continuous outcome.

We could begin by computing the sample sizes (n1 and n2), means 1 and 2), and standard deviations (s1 and s2) in each sample.

The confidence interval will be computed using either the Z or t distribution for the selected confidence level and the standard error of the point estimate. Where Sp is the pooled estimate of the common standard deviation (assuming that the variances in the populations are similar) computed as the weighted average of the standard deviations in the samples. Suppose we want to compare mean systolic blood pressures in men versus women using a 95% confidence interval. The following table includes 95% confidence intervals for each characteristic, computed using the same formula we used for the confidence interval for the difference in mean systolic blood pressures. The confidence interval for the difference in means provides an estimate of the absolute difference in means of the outcome variable of interest between the comparison groups. We previously considered a subsample of n=10 participants attending the 7th examination of the Offspring cohort in the Framingham Heart Study. Suppose we wish to construct a 95% confidence interval for the difference in mean systolic blood pressures between men and women using these data. The previous section dealt with confidence intervals for the difference in means between two independent groups. A single sample of participants and each participant is measured twice, once before and then after an intervention.

A goal of these studies might be to compare the mean scores measured before and after the intervention, or to compare the mean scores obtained with the two conditions in a crossover study. For example, we might be interested in the difference in an outcome between twins or between siblings. In the one sample and two independent samples applications participants are the units of analysis.

However, with two dependent samples application,the pair is the unit (and not the number of measurements which is twice the number of units).

In the Framingham Offspring Study, participants attend clinical examinations approximately every four years. We can now use these descriptive statistics to compute a 95% confidence interval for the mean difference in systolic blood pressures in the population. A crossover trial is conducted to evaluate the effectiveness of a new drug designed to reduce symptoms of depression in adults over 65 years of age following a stroke. One can compute a risk difference, which is computed by taking the difference in proportions between comparison groups and is similar to the estimate of the difference in means for a continuous outcome. The risk ratio (or relative risk) is another useful measure to compare proportions between two independent populations and it is computed by taking the ratio of proportions. Note that this formula is appropriate for large samples (at least 5 successes and at least 5 failures in each sample). The following table contains data on prevalent cardiovascular disease (CVD) among participants who were currently non-smokers and those who were current smokers at the time of the fifth examination in the Framingham Offspring Study.

A randomized trial is conducted among 100 subjects to evaluate the effectiveness of a newly developed pain reliever designed to reduce pain in patients following joint replacement surgery. Using the data in the table below, compute the point estimate for the difference in proportion of pain relief of 3+ points.are observed in the trial. Compute the 95% confidence interval for the difference in proportions of patients reporting relief (in this case a risk difference, since it is a difference in cumulative incidence). The risk difference quantifies the absolute difference in risk or prevalence, whereas the relative risk is, as the name indicates, a relative measure. The relative risk is a ratio and does not follow a normal distribution, regardless of the sample sizes in the comparison groups.

Be confident, please look at our collection of quotes in pictures and encourage us with a comment after watching the pictures : confidence quotes Photos confidence quotes Wallpapers awesome pictures of confidence quotes Wonderful confidence quotes photos Amazing Pictures of confidence quotes Beautiful confidence quotes images Newest confidence quotes photos If you like confidence quotes, you might be interested to see joker quotes or browse another images about quotes. Even for those that have a high self-image or high self-esteem in place, there will always be moments throughout life when we struggle with confidence!!

Arrogance is fueled by ego, fear, insecurity, narcissism, a need to prove, impress and gloat. Wouldn’t it make sense for me to require large amounts of alone time to recharge my batteries and hence, push away those I care about here and there?

People may often feel that they cannot be themselves or need to lose themselves when being with someone, but I found that the opposite can be true – when we have the confidence, experience and wisdom to choose for our higher purpose. Many of the outcomes we are interested in estimating are either continuous or dichotomous variables, although there are other types which are discussed in a later module. In practice, however, we select one random sample and generate one confidence interval, which may or may not contain the true mean. This means that there is a 95% probability that the confidence interval will contain the true population mean. However, if the sample size is large (n > 30), then the sample standard deviations can be used to estimate the population standard deviation.

Note that for a given sample, the 99% confidence interval would be wider than the 95% confidence interval, because it allows one to be more confident that the unknown population parameter is contained within the interval. The t distribution is similar to the standard normal distribution but takes a slightly different shape depending on the sample size.

We select a sample and compute descriptive statistics including the sample size (n), the sample mean, and the sample standard deviation (s). The margin of error is very small (the confidence interval is narrow), because the sample size is large. Because the sample size is small, we must now use the confidence interval formula that involves t rather than Z. These diagnoses are defined by specific levels of laboratory tests and measurements of blood pressure and body mass index, respectively.

For example, we might be interested in comparing mean systolic blood pressure in men and women, or perhaps compare BMI in smokers and non-smokers. For analysis, we have samples from each of the comparison populations, and if the sample variances are similar, then the assumption about variability in the populations is reasonable.

The sample is large (> 30 for both men and women), so we can use the confidence interval formula with Z. Next we substitute the Z score for 95% confidence, Sp=19, the sample means, and the sample sizes into the equation for the confidence interval. The following table contains descriptive statistics on the same continuous characteristics in the subsample stratified by sex.

There is an alternative study design in which two comparison groups are dependent, matched or paired. Participants are usually randomly assigned to receive their first treatment and then the other treatment. Symptoms of depression are measured on a scale of 0-100 with higher scores indicative of more frequent and severe symptoms of depression. When the outcome is dichotomous, the analysis involves comparing the proportions of successes between the two groups. The risk ratio is a good measure of the strength of an effect, while the risk difference is a better measure of the public health impact, because it compares the difference in absolute risk and, therefore provides an indication of how many people might benefit from an intervention. When constructing confidence intervals for the risk difference, the convention is to call the exposed or treated group 1 and the unexposed or untreated group 2. However, the natural log (Ln) of the sample RR, is approximately normally distributed and is used to produce the confidence interval for the relative risk.

There is a huge difference between confidence and selfishly pushing your agenda for the sake of your own gratification and ego.

The intent is to do what’s best for your higher good and therefore often intertwines with was is good for others. Confidence has given me the ability to recognize that I do require recharging of my batteries and then set the boundary by clearly stating when it becomes too much to be out and about. The people, situations and outcomes we choose and act upon within this realm do not infringe on our well-being, but instead help us grow and become continuously more confident and the butt kicker we set out to be. The parameters to be estimated depend not only on whether the endpoint is continuous or dichotomous, but also on the number of groups being studied. Recall that sample means and sample proportions are unbiased estimates of the corresponding population parameters. In a sense, one could think of the t distribution as a family of distributions for smaller samples.

The formulas for confidence intervals for the population mean depend on the sample size and are given below. Both of these situations involve comparisons between two independent groups, meaning that there are different people in the groups being compared. The standard error of the point estimate will incorporate the variability in the outcome of interest in each of the comparison groups. The men have higher mean values on each of the other characteristics considered (indicated by the positive confidence intervals). This judgment is based on whether the observed difference is beyond that expected by chance. We compute the sample size (which in this case is the number of distinct participants or distinct pairs), the mean and standard deviation of the difference scores, and we denote these summary statistics as n, d and sd, respectively. The data below are systolic blood pressures measured at the sixth and seventh examinations in a subsample of n=15 randomly selected participants. This is similar to a one sample problem with a continuous outcome except that we are now using the difference scores.

Because the 95% confidence interval for the mean difference does not include zero, we can conclude that there is a statistically significant difference (in this case a significant improvement) in depressive symptom scores after taking the new drug as compared to placebo.

Here smoking status defines the comparison groups, and we will call the current smokers group 1 and the non-smokers group 2. Because the 95% confidence interval includes zero, we conclude that the difference in prevalent CVD between smokers and non-smokers is not statistically significant.

Patients are randomly assigned to receive either the new pain reliever or the standard pain reliever following surgery.

There is a very clear line between being selfish and arrogant and being confident and loving.

Confidence is a peaceful, quiet place – not fueled by ego, fear, need to prove, please or impress another. It is built on quicksand with a house of cards and will blow over when challenged or proven otherwise. I find doing what is best for me, usually goes hand-in-hand with doing what is best for those around me, because I cannot be at my personal best and operate at my highest level, when I am off balance and feeling overwhelmed, unloved, ignored, angry, overextended, taken for granted, etc.

Confidence has also given me the ability to define these boundaries in a way that does not hurt or push away another by simply asking to stay in and watch a movie, for example, or asking to stay behind from this concert everyone is going to. When we choose from confidence and love, we choose what is best for us, almost 100% of the time, so the need to feel selfish, unkind and douche baggish also diminishes. When the outcome of interest is dichotomous like this, the record for each member of the sample indicates having the condition or characteristic of interest or not. If we assume equal variances between groups, we can pool the information on variability (sample variances) to generate an estimate of the population variability. However,we will first check whether the assumption of equality of population variances is reasonable.

The appropriate formula for the confidence interval for the mean difference depends on the sample size.

Since the data in the two samples (examination 6 and 7) are matched, we compute difference scores by subtracting the blood pressure measured at examination 7 from that measured at examination 6 or vice versa. The trial was run as a crossover trial in which each patient received both the new drug and a placebo. It is the ratio of the odds or disease in those with a risk factor compared to the odds of disease in those without the risk factor. A confidence interval for the difference in prevalent CVD (or prevalence difference) between smokers and non-smokers is given below.

By convention we typically regard the unexposed (or least exposed) group as the comparison group, and the proportion of successes or the risk for the unexposed comparison group is the denominator for the ratio.

First, a confidence interval is generated for Ln(RR), and then the antilog of the upper and lower limits of the confidence interval for Ln(RR) are computed to give the upper and lower limits of the confidence interval for the RR. Being loving and caring gives me the ability to allow another to freely choose if they want to be part of Carmen’s hamster ball of quiet, or partake in the rowdy bits without me, when I am feeling overwhelmed. The right people recognize light and intent and therefore won’t interfere, but add to it.

The sample should be representative of the population, with participants selected at random from the population.

In contrast, when comparing two independent samples in this fashion the confidence interval provides a range of values for the difference.

If a 95% confidence interval includes the null value, then there is no statistically meaningful or statistically significant difference between the groups. Based on this interval, we also conclude that there is no statistically significant difference in mean systolic blood pressures between men and women, because the 95% confidence interval includes the null value, zero. When the samples are dependent, we cannot use the techniques in the previous section to compare means. Before receiving the assigned treatment, patients are asked to rate their pain on a scale of 0-10 with high scores indicative of more pain. Either way, my actions are loving and allow for both to get what they want, without being pushed away, or feeling selfishly imposed upon. In generating estimates, it is also important to quantify the precision of estimates from different samples. Rather, it reflects the amount of random error in the sample and provides a range of values that are likely to include the unknown parameter. Just as with large samples, the t distribution assumes that the outcome of interest is approximately normally distributed.

If the confidence interval does not include the null value, then we conclude that there is a statistically significant difference between the groups. Because the samples are dependent, statistical techniques that account for the dependency must be used. Each patient is then given the assigned treatment and after 30 minutes is again asked to rate their pain on the same scale. Confidence is an ever changing and evolving flow of experiences, created by positive actions, aligned by the intent we have set in regards to whom we want to become and where we want to go.

Another way of thinking about a confidence interval is that it is the range of likely values of the parameter (defined as the point estimate + margin of error) with a specified level of confidence (which is similar to a probability). For each of the characteristics in the table above there is a statistically significant difference in means between men and women, because none of the confidence intervals include the null value, zero. Since the interval contains zero (no difference), we do not have sufficient evidence to conclude that there is a difference. When the outcome is continuous, the assessment of a treatment effect in a crossover trial is performed using the techniques described here. The difference in depressive symptoms was measured in each patient by subtracting the depressive symptom score after taking the placebo from the depressive symptom score after taking the new drug. All of these measures (risk difference, risk ratio, odds ratio) are used as measures of association by epidemiologists, and these three measures are considered in more detail in the module on Measures of Association in the core course in epidemiology.

Note also that this 95% confidence interval for the difference in mean blood pressures is much wider here than the one based on the full sample derived in the previous example, because the very small sample size produces a very imprecise estimate of the difference in mean systolic blood pressures.

Confidence interval estimates for the risk difference, the relative risk and the odds ratio are described below.

When there are small differences between groups, it may be possible to demonstrate that the differences are statistically significant if the sample size is sufficiently large, as it is in this example.

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