## Descriptive Statistics of Knowledge and Attitude as a Function of Hospital

The format in Table 1 was used because the result is a summary of statistics by group. The group is a hospital that is categorical with two levels and was placed on the horizontal axis. Knowledge and attitude are the dependent variable and are placed on the vertical axis. The result for mean, SD, min, max, and CI was fixed inside the columns.

2. A survey was conducted to evaluate employee flu vaccination rates in medical centers during the 2016-2017 flu season.

Number of centers | % of employees vaccinated |

2 | 0-9% |

4 | 10-19% |

6 | 20-29% |

16 | 30-39% |

25 | 40-49% |

30 | 50-59% |

27 | 60-69% |

15 | 70-79% |

8 | 80-89% |

1 | >90% |

Frequency Distribution of Flu vaccination rates among Employees of Medical Centre

The format in table 2 was used because the result is the frequency distribution of vaccination rate among employees. Percent of employees vaccinated is the variable of analysis.

3. A controlled clinical study was conducted to examine the effect of 2% lidocaine application prior to surgical site closure by CDC Surgical Site classification.

Lidocaine group: 45 patients (average age 51.46, SD 21.5)

Saline (control) group: 39 patients (average age 46.9 , SD 18.6)

Total # of infections: Lidocaine 4, Saline 11 (p = 0.02)

Grade I: Lidocaine 0 infections, Saline 0 infections

Grade II: Lidocaine 2 infections, Saline 2 infections

Grade III: Lidocaine 0 infections, Saline 3 infections

Grade IV: Lidocaine 2 infections, Saline 6 infections

**Summary Statistics by Experimental and Control Group**

The format in Table 3 is appropriate because the data provided is summary statistics and frequency by the experimental and control groups. Since a test of significance was conducted, the column for chi-square’s p-value was included

4. A study was conducted to examine the effect of body mass index on gestational diabetes mellitus.

Women who developed gestational DM: 240; Average age 28 (SD 1.4); Education

Women who did not develop gestational DM: 3138; Average age 18 (SD 1.5), Education < high school 18.2%, some college 22%, graduate degree 59.8%; BMI mean 23.6 (SD 4.4).

P values from t-test or Chi-square test: age 0.26, education 0.03, BMI < 0.0001

**Summary Statistics of Age, Education, and BMI by Gestational DM status**

*, ***represents significant at 5% and 1% level of significance respectively

The format above was used because we are displaying summary statistics and tests of significance for various variables.

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