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Table 1 Characteristics of the inverse probability-weighted population at all three time points

From: Generalized anxiety disorder in Berlin school children after the third COVID-19 wave in Germany: a cohort study between June and September 2021

Participants

N

T1

T2

T3

654

654

654

Sex

Male

Female

321 (49.1%)

333 (50.9%)

321 (49.1%)

333 (50.9%)

321 (49.1%)

333 (50.9%)

Age

Mean

SD

Range

12.8

2.3

6–19

13.0

2.3

6–19

13.1

2.3

7–19

Schoola

Primary

Secondary

243 (37.1%)

412 (62.9%)

243 (37.1%)

412 (62.9%)

243 (37.1%)

412 (62.9%)

School district SES

High

Middle

Low

390 (59.6%)

155 (23.7%)

109 (16.6%)

390 (59.6%)

155 (23.7%)

109 (16.6%)

390 (59.6%)

155 (23.7%)

109 (16.6%)

Monthly household income

Higher

Lower

N missing

333 (52.6%)

300 (47.4%)

22

332 (52.5%)

300 (47.5%)

22

342 (54.0%)

291 (46.0%)

22

Household education

Higher

Secondary

N missing

571 (87.6%)

81 (12.4%)

2

585 (89.8%)

66 (10.2%)

2

571 (87.7%)

80 (12.3%)

2

Family migration background

Yes

No

N missing

120 (19.6%)

493 (80.4%)

42

140 (21.7%)

507 (78.3%)

6

142 (22.1%)

501 (77.9%)

10

Vaccination

Any

None

N missing

28 (4.3%)

612 (95.7%)

15

143 (21.9%)

511 (78.1%)

0

304 (46.5%)

350 (53.5%)

0

COVID-19 infection

Ever

Never

35 (5.3%)

619 (94.7%)

41 (6.3%)

613 (93.7%)

43 (6.6%)

611 (93.4%)

  1. SD standard deviation
  2. aAge range is 6–14 years for primary schools and 10–19 years for secondary schools. Due to rounding of non-integer participant weights, the sum of individual strata might be ± 1 off from the total number of participants