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Table 2 Characteristics of the study cohort and sample

From: Empirical evidence of the continuing improvement in cost efficiency of an endoscopic surveillance programme for gastric cancer in Singapore from 2004 to 2010

 

Cohort*(n = 749)

Sample*(n = 216)

P

Age (year)

 

60.13 (7.32)

7.32 (60.23)

0.86†

Age group

50-59 years

426 (56.88)

121 (56.02)

 

≥ 60 years

323 (43.12)

95 (43.98)

0.88‡

Gender

Male

401 (53.54)

123 (56.94)

 

Female

348 (46.46)

93 (43.06)

0.39‡

Risk profile

Moderate

211 (28.17)

59 (27.31)

 

High

538 (71.83)

157 (72.69)

0.86‡

Follow-up (year)

 

3.34 (1.28)

3.55 (1.22)

0.03 †

Outcome

EGC

6 (0.8)

1 (0.46)

 

Death

7 (0.93)

2 (0.93)

 

Drop-out

49 (6.54)

8 (3.70)

 

Survival

687 (91.73)

205 (94.91)

0.47‡

Incidence Rate‖

 

240 (108, 534)

131 (18, 930)

0.98 §

Death Rate‖

 

280 (133, 587)

262 (66, 1048)

0.978 §

Drop-out Rate‖

 

1959 (1481, 2592)

1049 (524, 2097)

0.831 §

  1. Abbreviation: EGC: early gastric cancer.
  2. * Values are the mean (SD) for continuous variables and n (%) for categorical variables. Rates are reported with 95% confidence interval.
  3. † Student t-test.
  4. ‡ Chi-Square test.
  5. § Fisher’s exact test based on rate difference.
  6. ‖ Unit of rates is 1/100,000 per year.