# Format and print ContTable class objects

### Description

`print`

method for the `ContTable`

class objects created by `CreateContTable`

function.

### Usage

1 2 3 4 5 |

### Arguments

`x` |
Object returned by |

`digits` |
Number of digits to print in the table. |

`pDigits` |
Number of digits to print for p-values (also used for standardized mean differences). |

`quote` |
Whether to show everything in quotes. The default is FALSE. If TRUE, everything including the row and column names are quoted so that you can copy it to Excel easily. |

`missing` |
Whether to show missing data information (not implemented yet, placeholder) |

`explain` |
Whether to add explanation to the variable names, i.e., (mean (sd) or median [IQR]) is added to the variable names. |

`printToggle` |
Whether to print the output. If FLASE, no output is created, and a matrix is invisibly returned. |

`noSpaces` |
Whether to remove spaces added for alignment. Use this option if you prefer to align numbers yourself in other software. |

`nonnormal` |
A character vector to specify the variables for which the p-values should be those of nonparametric tests. By default all p-values are from normal assumption-based tests (oneway.test). |

`minMax` |
Whether to use [min,max] instead of [p25,p75] for nonnormal variables. The default is FALSE. |

`insertLevel` |
Whether to add an empty level column to the left of strata. |

`test` |
Whether to show p-values. TRUE by default. If FALSE, only the numerical summaries are shown. |

`smd` |
Whether to show standardized mean differences. FALSE by default. If there are more than one contrasts, the average of all possible standardized mean differences is shown. For individual contrasts, use |

`...` |
For compatibility with generic. Ignored. |

### Value

A matrix object containing what you see is also invisibly returned. This can be assinged a name and exported via `write.csv`

.

### Author(s)

Kazuki Yoshida

### See Also

`CreateTableOne`

, `CreateContTable`

, `summary.ContTable`

### Examples

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 | ```
## Load
library(tableone)
## Load Mayo Clinic Primary Biliary Cirrhosis Data
library(survival)
data(pbc)
## Check variables
head(pbc)
## Create an overall table for continuous variables
contVars <- c("time","age","bili","chol","albumin","copper",
"alk.phos","ast","trig","platelet","protime")
contTableOverall <- CreateContTable(vars = contVars, data = pbc)
## Simply typing the object name will invoke the print.ContTable method,
## which will show the sample size, means and standard deviations.
contTableOverall
## To further examine the variables, use the summary.ContTable method,
## which will show more details.
summary(contTableOverall)
## c("age","chol","copper","alk.phos","trig","protime") appear highly skewed.
## Specify them in the nonnormal argument, and the display changes to the median,
## and the [25th, 75th] percentile.
nonNormalVars <- c("age","chol","copper","alk.phos","trig","protime")
print(contTableOverall, nonnormal = nonNormalVars)
## To show median [min,max] for nonnormal variables, use minMax = TRUE
print(contTableOverall, nonnormal = nonNormalVars, minMax = TRUE)
## The table can be stratified by one or more variables
contTableBySexTrt <- CreateContTable(vars = contVars,
strata = c("sex","trt"), data = pbc)
## print now includes p-values which are by default calculated by oneway.test (t-test
## equivalent in the two group case). It is formatted at the decimal place specified
## by the pDigits argument (3 by default). It does <0.001 for you.
contTableBySexTrt
## The nonnormal argument toggles the p-values to the nonparametric result from
## kruskal.test (wilcox.test equivalent for the two group case).
print(contTableBySexTrt, nonnormal = nonNormalVars)
## The minMax argument toggles whether to show median [range]
print(contTableBySexTrt, nonnormal = nonNormalVars, minMax = TRUE)
## summary now includes both types of p-values
summary(contTableBySexTrt)
## If your work flow includes copying to Excel and Word when writing manuscripts,
## you may benefit from the quote argument. This will quote everything so that
## Excel does not mess up the cells.
print(contTableBySexTrt, nonnormal = nonNormalVars, quote = TRUE)
## If you want to center-align values in Word, use noSpaces option.
print(contTableBySexTrt, nonnormal = nonNormalVars, quote = TRUE, noSpaces = TRUE)
``` |