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Table 2 Mortality for children with and without measles vaccine and vaccines during follow-up. Stratified by age at measles vaccination and sex

From: Is early measles vaccination associated with stronger survival benefits than later measles vaccination?

 

Number of observations

MR per 1000 PYRS (deaths/PYRS)

HR (95% CI)a

Number of observations with a seen vaccination card within 12 months after visit

Measles Vaccinated during follow up

DTP Vaccinated during follow up

All children

Measles unvaccinated

9440

65.5 (272/4155)

1 (ref)

5825

48% (2767/5825)

30% (1721/5825)

Measles vaccinated

22,285

44.9 (441/9811)

0.76 (0.63–0.91)

16,535

3% (532/16535)

10% (1580/16535)

 Early age (< 274 days)b

5740

41.9 (106/2528)

0.68 (0.53–0.87)

4096

4% (183/4096)

10% (424/4096)

 Recommended age (274–365 days) b

9706

44.3 (188/4245)

0.77 (0.62–0.96)

7027

3% (201/7027)

7% (489/7027)

 Late (366–735 days) b

6839

48.4 (147/3038)

0.86 (0.67–1.11)

5412

3% (148/5412)

12% (667/5412)

Boys

Measles unvaccinated

4782

63.7 (134/2104)

1 (ref)

2943

47% (1385/2943)

28% (832/2943)

Measles vaccinated

11,345

46.2 (231/4995)

0.79 (0.62–1.00)

8505

3% (270/8505)

10% (814/8505)

 Early age (< 274 days) b

2936

48.1 (62/1290)

0.79 (0.57–1.08)

2074

4% (85/2074)

11% (228/2074)

 Recommended age (274–365 days)b

4959

42.8 (93/2170)

0.75 (0.56–1.00)

3636

3% (107/3636)

7% (254/3636)

 Late (366–735 days)b

3450

49.5 (76/1535)

0.89 (0.64–1.22)

2795

3% (78/2795)

12% (332/2795)

Girls

Measles unvaccinated

4658

67.3 (138/2051)

1 (ref)

2882

48% (1382/2882)

31% (889/2882)

Measles vaccinated

10,940

43.6 (210/4816)

0.73 (0.57–0.93)

8030

3% (262/8030)

10% (766/8030)

 Early age (< 274 days)b

2804

35.5 (44/1238)

0.57 (0.40–0.81)

2022

5% (98/2022)

10% (196/2022)

 Recommended age (274–365 days)b

4747

45.8 (95/2075)

0.79 (0.59–1.05)

3391

3% (94/3391)

7% (235/3391)

 Late (366–735 days)b

3389

47.2 (71/1503)

0.83 (0.60–1.15)

2617

3% (70/2617)

13% (335/2617)

  1. aAge as underlying time scale, stratified by village cluster; bAge at measles vaccination according to the information obtained from the vaccination card at the beginning of the observation period. Abbreviations: MR Mortality Rate, PYRS Person years, HR Hazard Ratio, CI Confidence interval