statsmodels.stats.proportion._score_confint_inversion

statsmodels.stats.proportion._score_confint_inversion(count1, nobs1, count2, nobs2, compare='diff', alpha=0.05, correction=True)[source]

Compute score confidence interval by inverting score test

Parameters
count1, nobs1

Count and sample size for first sample.

count2, nobs2

Count and sample size for the second sample.

comparestr in [‘diff’, ‘ratio’ ‘odds-ratio’]

If compare is diff, then the confidence interval is for diff = p1 - p2. If compare is ratio, then the confidence interval is for the risk ratio defined by ratio = p1 / p2. If compare is odds-ratio, then the confidence interval is for the odds-ratio defined by or = p1 / (1 - p1) / (p2 / (1 - p2).

alphafloat in interval (0,1)

Significance level, e.g. 0.05, is the probability of a type I error, that is wrong rejections if the Null Hypothesis is true.

correctionbool

If correction is True (default), then the Miettinen and Nurminen small sample correction to the variance nobs / (nobs - 1) is used. Applies only if method=’score’.

Returns
lowfloat

Lower confidence bound.

uppfloat

Upper confidence bound.