Skip to main content

Table 2 Mortality, odds ratios (OR) and adjusted odds ratios (AOR) among internally displaced persons in Ampara, Sri Lanka due to the 2004 Indian Ocean tsunami.

From: Who died as a result of the tsunami? – Risk factors of mortality among internally displaced persons in Sri Lanka: a retrospective cohort analysis

  

N

mortality

OR (95% CI)

AOR (95% CI)

Total

 

3,533

12.9%

  

Individual level

     

   Age (years)

<5

343

31.8%

5.87 (4.03–8.55)***

5.90 (4.21–8.26)***

 

5–9

376

23.7%

3.91 (2.69–5.68)***

3.94 (2.74–5.66)***

 

10–14

424

10.1%

1.42 (0.94–2.16)

1.41 (0.92–2.16)

 

15–19

435

9.2%

1.28 (0.83–1.95)

1.14 (0.75–1.74)

 

20–29

748

7.4%

1.00

1.00

 

30–39

464

7.5%

1.03 (0.66–1.60)

0.97 (0.63–1.49)

 

40–49

383

8.1%

1.11 (0.70–1.76)

1.18 (0.75–1.85)

 

>50

360

15.3%

2.27 (1.52–3.39)***

2.53 (1.62–3.96)***

   Sex

Male

1,732

8.2%

1.00

1.00

 

Female

1,801

17.5%

2.37 (1.92–2.94)***

2.79 (2.29–3.39)***

   Location when tsunami hit

own house

3,042

13.8%

1.00

 
 

someone's house

31

22.6%

1.82 (0.78–4.25)

 
 

mosque/temple

3

0.0%

0.00

 
 

other inside

52

11.5%

0.81 (0.35–1.92)

 
 

around own house

204

7.4%

0.50 (0.29–0.85)**

 
 

Beach

32

9.4%

0.65 (0.20–2.13)

 
 

Sea

36

8.3%

0.57 (0.17–1.86)

 
 

other outside

133

2.3%

0.14 (0.05–0.46)***

 
 

inside total

3,128

13.8%

2.55 (1.67–3.91)***

2.87 (1.44–5.71)**

 

Outside total

405

5.9%

1.00

1.00

   Pre-existing health problem

No

3,194

12.8%

1.00

 
 

Yes

339

14.2%

1.12 (0.81–1.55)

 

Household level

     

   Living area

Karaitivu

1,847

12.1%

1.00

 
 

Sainthamarthu

986

14.0%

1.19 (0.94–1.49)

 
 

Kalmunai

801

13.5%

1.13 (0.89–1.45)

 

   Living periods (years)

0–9

661

13.6%

1.00

 
 

10–19

775

15.2%

1.14 (0.85–1.53)

 
 

20–29

1,095

12.0%

0.86 (0.65–1.15)

 
 

>30

994

11.9%

0.85 (0.64–1.15)

 

   Ethnicity

Shinhalese

10

10.0%

0.80 (0.10–6.36)

 
 

Tamil

1,806

12.2%

1.00

 
 

Muslim

1,717

13.7%

1.15 (0.94–1.40)

 

   Educational level

no school

260

7.7%

0.46 (0.28–0.75)**

0.41 (0.20–0.88)*

 

Primary

887

15.3%

1.00

1.00

 

secondary

2,141

13.3%

0.84 (0.68–1.05)

0.90 (0.65–1.25)

 

Higher

245

6.9%

0.41 (0.24–0.70)***

0.48 (0.24–0.95)*

   Occupation

Farming

127

9.5%

1.00

 
 

Fishing

1,433

15.4%

1.75 (0.95–3.22)

 
 

Laborer

1,122

10.3%

1.11 (0.59–2.06)

 
 

Trader

155

10.3%

1.10 (0.50–2.43)

 
 

professional

122

6.6%

0.67 (0.26–1.71)

 
 

Others

574

14.6%

1.64 (0.87–3.11)

 
 

Fishing

1,433

15.4%

1.44 (1.18–1.75)***

1.38 (1.04–1.85)*

 

Others

2,100

11.2%

1.00

1.00

   Household income (Rupee)

Nothing

132

12.9%

1.00

 
 

1–2999

1,221

12.0%

0.93 (0.54–1.59)

 
 

3000-

1,348

13.4%

1.05 (0.62–1.79)

 
 

6000-

567

12.5%

0.97 (0.55–1.71)

 
 

10000-

210

16.2%

1.31 (0.70–2.45)

 
 

15000-

55

12.7%

0.99 (0.38–2.54)

 

   Level of house destruction

less than half

195

4.6%

1.00

1.00

 

more than half

308

5.5%

1.21 (0.53–2.77)

1.52 (0.51–4.55)

 

Totally

3,030

14.2%

3.43 (1.74–6.75)***

3.79 (1.49–9.66)**

  1. * p < 0.05, ** p < 0.01, *** p < 0.001
  2. CI; confidence interval
  3. † Adjusted odds ratios were obtained by a logistic regression model, containing variables for age band, sex, location when tsunami hit, educational level, fishing as an occupation and the house destruction level.