Hng dn s dng EpiData 3.1Edited from : B mn thng k, H Y Dc Tp.HCM, Khoa Y t Cng cng

Cc c im chnh Nhp ngy thng d dng (th d nhp 1210 biu din cho ngy 12/10/2007 nu vic nhp liu thc hin vo nm 2007) Dng cho dataset n gin hay phc tp. H tr 999 dng vn bn trong b nhp liu.

Chng trnh c cng nng mnh: lu gi trn 200.000 bn ghi v tmkim bn ghi di 1 giy. Lm vic vi 3 file chnh: .QES (dng thit k b nhp liu); . REC (dng cho vic lu tr s liu); .CHK (dng cho vic kim tra d liu nhp vo).

Cu trc bng nhp liu

Nhn bin Tn bin M t loi bin

Tng ng trn StataTn bin: outc Nhn bin: ket cuoc dieu tri

Nhn gi tr ca bin s: giam hoan toan

Gi tr ca bin s: 4

Cc loi bin v m ha Bin nh lng: Th hin bng con s (c th c s l thp phn) Bin nh tnh: Cn phi m ha bng con s (thng l s nguyn), phi m ha gi tr ca bin s (th d nam=1 n =2) Bin s khng cn phn tch: th hin bng bin vn bn __________________________

Bin ngy thng: c th in t ng hoc nhp bng tay Bin m s : t ng in s th t khi nhp bng mi

V d: id v1 v2 v3 bmi v4 age s1 s2 t1 ma so benh nhan gioi Chieu cao(meter) Can nang (kilo) Chi so khoi co the Ngay sinh Tuoi hien tai Cu ngu tai Huyen Tinh/thanh pho Ngay nhap lieu ### # #.## ###.# ##.## ### _____________

Lu : Trong mu nhp liu nn c trng ID phn bit cc phiu nhp liu khc nhau. Mun to nhanh b cu hi hy nhp tt c tn (name) v nhn (label) cho bin trc ri mi nhp m t loi bin s sau. Cng c gip m t loi bin l danh sch chn trng (Edit::Field Pick List hay phm tt Ctrl-Q) Sau khi xy dng mu nhp liu c th sp xp cc trng thng hng bng cch s dng menu Edit::Align fields

Nn thng xuyn Ctrl-S lu biu mu.

3.2. Make Datafile (To tp tin s liu) Xem th biu mu (Preview Data Form): Nhp Ctrl-T To B cu hi (Make Data File): menu Data file :: make data file. Nhn F10 ng cc ca s nu c

3.3. Check (nh cc quy tc kim tra khi nhp liu) - Gii hn gi tr nhp liu v cho vn bn m t m s c nhp - Xc nh trnh t nhp liu. Th d b qua mt s cu hi nu l nam gii

- Tnh ton trong khi nhp liu. Th d tnh tui vo lc iu tra davo ngy iu tra v ngy sinh (tuy nhin tt nht nn thc hin vic tnh ton trong qu trnh phn tch)

- Cc tr gip v cc nh ngha m rng ca tnh ton.

Tn bin Nhn bin Loi bin Gii hn gi tr nhp vo nhp gi tr 1 s nhy vo trng v4 Nu l Yes th phi nhp liu Nu l Yes, Lp li gi tr bn ghi c Dn nhn cho s liu To nhn cho s liu NoEnter, type comment v cng thc

3.4. Enter Data (Nhp liu)

Menu Goto Goto Record: di chuyn bn ghi Find Record: tm kim bn ghi n Record 1 Ctrl-Alt-Home n Record cui cng Ctrl-Alt-End

V trc 1 record Ctrl-PageUp F7

Ra sau 1 record Ctrl-PageDown F8

Lu : iu chnh B nhp liu sau khi nhp 1 s record S dng thanh cng c tin trnh m tp tin QES v iu chnh b cu hi. Sau vo menu Tools revise data file lm tp tin REC iu chnh

theo tp tin QES Khng c s dng chc nng 2. Make data file (s b mt ton b s liu) Khi c errors found in check file khng c lu (save) thng bo li vi

tp tin QES

3.5. Document Data (Ghi nhn s liu) Sau khi nhp liu s dng menu Document :: View Data xem s liu nh kiu Excel Document :: Code book xem thng k n gin (phn phi tn sut, ti thiu, ti a, trung bnh,

lch chun ca cc s liu

3.6. Export for analysis and securing data (Xut s liu hay m bo s liu) Chn thanh cng c Export data :: Stata chuyn s liu sang Stata Chn tp tin mun chuyn i

Ca s export data file to stata file hin ra, chn ccbin cn xut sang stata ri nhp vo nt lnh OK Sau c th chy chng trnh Stata xem li s liu