Teeth {MST}

Tooth Loss Data

Description

Survival of teeth with various predictors.

Usage

data("Teeth")

Format

A data frame with 65,890 teeth on the following 56 variables.

x1

numeric. mobil Mobility score (on a scale 0–5).

x2

numeric. bleed Bleeding on Probing (percentage).

x3

numeric. plaque Plaque Score (percentage).

x4

numeric. pocket_mean Periodontal Probing Depth (tooth-level mean).

x5

numeric. pocket_max Periodontal Probing Depth (tooth-level mean).

x6

numeric. cal_mean Clinical Attachment Level (tooth-level mean).

x7

numeric. cal_max Clinical Attachment Level (tooth-level max).

x8

numeric. fgm_mean Free Gingival Margin (tooth-level mean).

x9

numeric. fgm_max Free Gingival Margin (tooth-level max).

x10

numeric. mg Mucogingival Defect.

x11

numeric. filled Filled Surfaces.

x12

numeric. decay_new Decayed Surfaces – new.

x13

numeric. decay_recur Decayed Surfaces – recurrent.

x14

numeric. dfs Decayed and Filled Surfaces.

x15

factor. crown Crown.

x16

factor. endo Endodontic Therapy.

x17

factor. implant Tooth Implant.

x18

factor. pontic Bridge Pontic.

x19

factor. missing_tooth Missing Tooth.

x20

factor. filled_tooth Filled Tooth.

x21

factor. decayed_tooth Decayed Tooth.

x22

factor. furc_max Furcation Involvement for Molars.

x23

numeric. bleed_ave Bleeding on Probing (mean percentage).

x24

numeric. plaque_ave Plaque Index (mean percentage).

x25

numeric. pocket_mean_ave Periodontal Probing Depth (mean of tooth mean).

x26

numeric. pocket_max_ave Periodontal Probing Depth (mean of tooth max).

x27

numeric. cal_mean_ave Clinical Attachment Level (mean of tooth mean).

x28

numeric. cal_max_ave Clinical Attachment Level (mean of tooth max).

x29

numeric. fgm_mean_ave Free Gingival Margin (mean of tooth max).

x30

numeric. fgm_max_ave Free Gingival Margin (mean of tooth max).

x31

numeric. mg_ave Mucogingival Defect (mean).

x32

numeric. filled_sum Filled Surfaces (total).

x33

numeric. filled_ave Filled Surfaces (mean).

x34

numeric. decay_new_sum New Decayed Surfaces (total).

x35

numeric. decay_new_ave New Decayed Surfaces (mean).

x36

numeric. decay_recur_sum Recurrent Decayed Surfaces (total).

x37

numeric. decay_recur_ave Recurrent Decayed Surfaces (mean).

x38

numeric. dfs_sum Decayed and Filled Surfaces (total).

x39

numeric. dfs_ave Decayed and Filled Surfaces (mean).

x40

numeric. filled_tooth_sum Number of Filled Teeth.

x41

numeric. filled_tooth_ave Percentage of Filled Teeth.

x42

numeric. decayed_tooth_sum Number of Decayed Teeth.

x43

numeric. decayed_tooth_ave Percentage of Decayed Teeth.

x44

numeric. missing_tooth_sum Number of Missing Teeth.

x45

numeric. missing_tooth_ave Percentage of Missing Teeth.

x46

numeric. total_tooth Number of Teeth.

x47

numeric. dft Number of Decayed and Filled Teeth.

x48

numeric. baseline_age Patient Age at Baseline (years).

x49

factor. gender Gender.

x50

factor. diabetes Diabetes Mellitus.

x51

factor. tobacco_ever Tobacco Use.

molar

logical. Molar.

id

numeric. Patient ID.

tooth

numeric. Tooth ID.

event

numeric. Tooth Loss Status.

time

numeric. Follow Up Time.

Details

Patients were treated at the Creighton University School of Dentistry from August 2007 to March 2013. This is a subset of the original data.

The goal is to estimate the survival time of teeth (molars or non-molars) using 51 predictors (22 tooth-level factors (x1–x22) and 29 patient-level factors (x23–x51)).

Examples

data(Teeth)