Chi-square

P

Late (NO. %)

NORMAL (NO. %)

Early (NO. %)

Characteristics

Nationality

2.330

0.312

36% - 2.4%

2% - 0.1%

662% - 44.5%

19% - 1.3%

735% - 49%

32% - 2.2%

Saudi

Non-Saudi

Region

12.004

0.151

12% - 37.6%

13% - 19.0%

2% - 8.1%

0% - 7.5%

11% - 0.7%

250% - 16.8%

123% - 8.3%

53% - 3.6 %

60% - 4.0%

195% - 13.1%

297% - 20.0%

147% - 9.9%

66% - 4.4%

51% - 3.4%

206% - 13.9%

East

Western

South

North

Central

-

-

38% - 2.6%

681% - 45.8%

767% - 51.6%

Age at menarche