Evidence-Based Practice for Nurses

What is the hypothesis asking?

Is there a difference between the groups?

Is there a relationship among the variables?

1 Group

2 Groups

> 2 Groups

2 Variables

> 2 Variables

Related

Independent

What is the level of measurement?

Nonparametric

Nominal

‹

Chi square

‹

Chi square

‹

Fisher’s exact probability test

‹

Chi square

‹

Chi square

‹

Phi coefficient

‹

Point biserial

‹

Contingency coefficient

Ordinal

‹

Kolmogorov-Smirnov

‹

Sign test

‹

Wicoxin matched pairs

‹

Signed rank

‹

Chi square

‹

Median test

‹

Mann-Whitney U

‹

Chi square

‹

Kendall’s Ta u

‹

Spearman Rho

Parametric

Interval or Ratio

‹

Correlated

t^

(paired

t)

‹

Correlated

t^

(paired

t)

‹

Independent t

‹

ANOVA

‹

ANCOVA

‹

MANOVA

‹

Pearson’s

r

‹

Multiple regression

‹

Path analysis

‹

Canonical correlation

Note:

ANOVA

= analysis of variance; ANCOVA

=

analysis of covariance; MANOVA

= multivariate analysis of variance.

TABLE 13-12

Inferential Tests Commonly Used in Nursing

364 CHAPTER 13 What Do the Quantitative Data Mean?