Artificer and spell wrought tattoo question

[dnd2016]

So it says in the chart you get a plus 5 to attack bonus. Does that include proficiency bonus?



Spellwrought Tattoo
Spell Level Rarity Spellcasting Ability Modifier Save DC Attack Bonus
Cantrip Common +3 13 +5
1st Common +3 13 +5
2nd Uncommon +3 13 +5
3rd Uncommon +4 15 +7
4th Rare +4 15 +7
5th Rare +5 17 +9

[stoutstien]

The attack modifier or DC listed on the magical item is what is used. The rules for this is found in the DMG at the beginning of the magic item section if you're curious.